It completes its trip to space with people on board for nasa. Joining me is the Nasa Public Affairs officer. It is great to be back here for this historic milestone moment and nasas commercial crew program. Expected toome is last roughly 19 hours. That includes four departure up with burn to line the landing location, and a final burn. The trip home also includes an eight hour sleep period where both crewmembers can get some rest before arrival gone are the tomorrow after a little more than two months in space. Dragon is targeted to splash down off the coast of pensacola florida pensacola, florida at 11 48 pacific time tomorrow followed either crew getting picked up. The Mission Began on may 30 at kennedypad 39a space center and sort of. After a successful launch, the astronauts enjoyed a 14 hour flight on dragon before they came to the International Space station. Bob and doug have been doing real work aboard the station. Captain completed spacewalks and theyve also taken spectacular photos. We will have a chance to share some of those later in the broadcast. It has already been 63 days since they arrived in space and they are entering the final phase of their mission just a few hours from now and they have been preparing the last two weeks for the return flight. Today on board the space station is the expedition 63 crew led by Chris Cassidy and joined by russian cosmonauts. And of course bob and doug. Teams have also been performing a number of checkouts in preparation for departure today. Over the last several weeks inspections of the heat shields, checkout of the suits, calms systems, and a systems, as well as cargo loading. Why dont we check in with gary at Johnson Space center and he can tell us how the station crew have been preparing and what we can expect from here. And all inside the International Space station Flight Control room. Since arriving at this vacation, bob and doug jumped in as fully fledged members of expedition 63. The last two months they have executed more than two dozen scientific addition scientific studies, including in biology and biotechnology, earth research,sciences, and technology demonstrations. They also have plenty of includinge work, vehicle hardware and transferring cargo in and out of the attached cargo spacecraft. Executed four spacewalks with Chris Cassidy, upgrading one of the large external batteries with doug assisting. Since completing the spacewalks, bob and doug have spent the last two weeks preparing to come home. They have received additional on orbit training to assist on departure and splashdown and have been busy packing cargo for their return. Thats what they are doing right now. There will be approximately 150 kilograms returning on dragon. The majority is more than 200 pounds of science, largely made up of samples in freezers. They are from a range of biological Research Experiments on the station dedicated to improving our understanding of the human body adapting to microgravity, or using space to improve life on earth. Lets go through some of the major upcoming milestones for todays departure. Coming up at around 2 35 p. M. Pacific, we are waiting for bob and doug to board the station rather, board of the dragon for the return flight home. They are doing some closeout duties now, but that is one of the first items on the agenda today. Less than 30 minutes from now, they will close the dragon hatch , around 2 45 p. M. Pacific time. Once in the vehicle, they will don their spacesuits, worn during all dynamics phases of the flight. All of the checks will be will occur before they strap in for undocking. Once the hatch is close, chris will city cassidy create a space between the station known as a vestibule. He then has another hatch to close. After all of the hatches are closed, about 15 minutes later, a ground command be sent to open the valves on the dragon side and begin depressurization, essentially venting air. Psi tove to pause at 5 allow the temperature in the vestibule to stabilize before they continue depressurization. Theyp. M. Central time, conduct go no go here in houston and if all is go, the undocking begins. There will be a few minutes for the umbilical to detach. 12 hooks will detach and then the dragon thrusters will initiate and undocking will be complete. That separation is scheduled for 4 34 p. M. Pacific time. There are four departure burns. Immediately after those two burns, they have the physical separation and the departure burns will take them around the zenith side of the International Space station. Those departure burns taking them, takingf place over the first few hours of their flight, essentially getting that dragon further away from the International Space station. Ableight, the crew will be to get a sleep two in. Orbital chip project trajectory allows them to get in a good circadian rhythm and allows them to perform all of their tasks prior to splashdown. Including, while they are asleep, they will also be performing a phased burn. Right now they are in the orbital plane of the iss but phased burn will align them with the primary landing site. Right now we are looking go for pensacola, just off the coast of pensacola, florida. Series ofperform a checks upon waking up when the phased burn occurs while they sleep. Waking up, they put on their suits and prepare for the deorbit sequence. They will prepare for the cost separation. Claw separation. They will perform a heavy yaw of the vehicle. Dragon back up with the orbital plane inside the forward ok. This will be one of the forward bulkhead. This will be one of the longest burns. They will position the dragon for reentry into earths atmosphere and the reentry sequence will begin. Before they do that, they do have to close the nosecone. After they close the nosecone, they will go through the the parachutes, and then splashdown scheduled for sunday afternoon around 1 48 p. M. Central time, 11 48 a. M. Pacific time. Recovery operations begin after that and they will be back on planet earth. Station commander Chris Cassidy will watch the undocking and departure burn from the c uppola, but most of it falls to bob and doug. The crew on board has the ability to take control of dragon during departure if necessary. On the station side, we are looking good, arrays are locked in place, everything looking healthy. They will remain on u. S. Control until undocking. There are no issues for a departure here. Now back to you and hawthorne. Right now on your screen is a view of Mission Control, thats where the Ground Controllers are operating. We listenwhy dont into the net for a second, i think there is some chatter happening. We are going to start and we have ago. A go. You are go. A believe i just heard a go call on the sb net, but i think we are still in the process of assessing Vehicle Health and making sure bob and doug can , which ise capsule currently underway. With the ingress operations underway, we are about 10 minutes to hatch closer at about two hours before the dragon departs the International Space station at 4 34 p. M. Pacific time. Bob and doug need to get into their spacesuits. Primary function is to protect the crew in case of cabin depressurization. If that were to occur, the suits inflate with either a combination of nitrogen and oxygen or oxygen, depending on the pressure. It gives them a habitable environment long enough to get home safely in an emergency scenario. The external portion of the suit is also flame retardant, so if there was a fire on board the vehicle, the suits would provide some protection in that event. This is are actually really cool. They are very aesthetically designed and designed inhouse at spacex. They are very sleek. The crew has been busy all day as they prepare to leave. Got up this morning, actually evening on the International Space station right now, and they got up and started working out. All of the astronauts on the space station have to work out two hours every day every day every day to keep up the strength so that they can walk when they get back home. They got up, had the opportunity to do that, bob behnken transferred some emergency equipment from dragon into the space station. They keep the emergency equipment in there in case they needed to make a speedy getaway and dragon in case some thing happened on the International Space station. You mention the idea of safe haven. Vehicles,e visiting when they are attached to the space station, they can provide the crew with a place to hole up if there was an emergency on the station, a leak or a fire or depressurization. Some of that emergency equipment is stored in the vehicle for quick access in case they needed to get inside quickly. The crew actually train ready rigorously on those emergency scenarios, getting in quickly under all kinds of disability scenarios and ensuring crewmates are aboard safely in their vehicles as well. We did some training with the crew here in hawthorne earlier this month. Of what isk recap coming up next. Bob and doug going through ingress operations right now. About 2 35 p. M. Pacific time is hatch closure, and that is where we will close the forward hatch on the dragon station dragon spacecraft. Then, the closing of the apex hatch. That is on the space station side. The space station crew will be working on that. Then vestibule depressurization, that is the space between the hatches that accrue flies through when they arrive and leave. That space as close to a vacuum as possible because thats what it will be exposed to ones crew dragon departs, hopefully in a couple of hours. Right now, the planned departure and separation is 4 34ng around for 34 p. M. Pacific time. Thats when we are hoping dragon do some small, docking burns that will separated from the space station. This is a view from inside the space station looking down to the depressurization adapter. I think i saw cassidy in the view and i think those are his other expedition crewmates on board, bob and doug probably inside the capital capsule at this point. Looks like cassidy to the left and the others upside down, what looks like upside down to us, but there is no upside down in space. Hatches are still open so we will wait for the closure. You can see that is probably the apex hatch if you look past where the iss crew are, i believe that is the apex hatch, kind of that white circle, and Chris Cassidy will attach a docking target onto that when we are ready to close the hatch. He might be hopping into dragon to help out with work in the capsule with securing. We mentioned bob and doug have been busy today. They have been busy as well stowing cargo on board the vehicle. Just listening to the net, it looks like they are going through life support activation. I heard a callout that Carbon Dioxide levels are coming down, which means the lifesupport system is actively taking in air from the cabin and revitalizing it so bob and doug can breathe nicely on board. Just some statistics while we are thinking about it. Obviously mentioned that crew dragon has been on the station for 63 days. It feels like yesterday. During that time, bob and doug millionveled over 27 miles around the earth. Incredible. Frequent flyers, i would say. Do you get a frequentflier pass for dragon . [laughter] around. Zipping i think on ground track, they are going over 17,000 kilometers when they are at isss orbital altitude. I think it is 70,500 miles per hour. It is 17,500 miles per hour. Still extremely fast. If you look just above the hatch, you see the iss 20 flag, presenting the 20th anniversary of the International Space station, which we will celebrate later this year. For the past 20 years i like to explain it as if you are under 20 years of age, you have never lived a day without humans in space. The last 20 years, we have had continuous human presence on the International Space station. It is truly international. Our upside down friends we see getting a better look inside, they are from the Russian Space agency. Looks like they are taking out the inner module ventilation, which helps equalize the air between dragon capsule and the rest of the International Space station. While dragon has been attached to the space station, most operations have in a lowpower state where we only have monitoring on the thermal system, propellant system, looking at some parameters in case we were to see anything that would trigger the dragons on board automation to let ground operators know something needs to be addressed. The onboard lifesupport system is only used when we close the periodsand for brief when the vehicle first arrives, and when it is leading like now. That duct, the intermodule ventilation duct, that provides clean, breathable air and circulates the air in the capsules, providing the air from the International Space station. It looks like hatch closure will soon be underway. We are closing the forward hatch. The equipment inside dragon is being moved back into the space station. [no audio] is part of those activities, moving the intermodule ventilation ducts, the lithium hydroxide scrubbers on board dragon have been running. I think we are waiting on confirmation of hatch closure. I think they just called down that they are working on that, putting that into motion. The forward hatch is closed for endeavor. Copy. Houston copies. We just got confirmation that capsule endeavor has closed the forward hatch. We can actually see on our screen that they are closing the apex hatch as well. That crew dragon hatch closure came at 2 36 p. M. Pacific time as the iss was flying over the north atlantic ocean. Hatch closure operations, bob and doug impacted the seal on the interior surface on the forward hatch on dragon. Were talking about the forward hatch and site hatch. The forward hatch is the part attached to sort of the front portion of the International Space station. Imagine the iss flying in a direction around the earth, the forward election is what they are attached to. If you imagine the capsule sitting on the racket, its the top of the rocket underneath the nosecone. Rocketare imagining the as it was on the launchpad, it is a little sideways right now. There is a ceiling surface on the forward hatch that bob and doug did an inspection on to make sure there is no foreign that couldis or fod create a potential leak. Looks like we may be stepping into a sidelight handover, which a satellite handover, which happens frequently. Checking data, the satellite system constantly moving from one to the next. We actually used the tracking and data relay satellites as well on the dragon as well. I believe they are in the geo belt, hopefully that is correct. [laughter] communications, uplink and downlink and commanding, downlink for us to command the vehicle if we need to step in on the ground side. Speaking of which, we have a view of Mission Control in hawthorne. That is where our Mission Controllers are in hawthorne, the folks issuing commands to dragon spacecraft are all sitting in the third row spacecraft. The mission row is commander. Have bobacecraft, we in his comfort garment, which is what he wears under his suit. The capsule is getting all packed up. Another view from the International Space station side of things, looks like anatoly flying out of you and Chris Cassidy between the hatches in that vestibule area. Proceduresng through to soon be closing the apex hatch and prepare for depressurization. We talked about this a little bit. Copy, spacex, thank you. We talked about this a little vestibule, but the the space between the apex hatch and forward hatch on dragon is a small volume that is normally exposed to the vacuum of space when we dont have a visiting vehicle like the dragon spacecraft. We have to step through some depressurization steps once we have confirmed all of the hatches are secured both on the International Space station side and the dragon side. We just heard the call that bob and doug are go for suit donning. The dragon hatches closed and theyve said goodbye to their friends for now until they are on the ground in the future. They will go through suit donning. The comfort garment is the first layer of the suit. It is basically like an athletic garment, it just helps them stay comfortable before they step into the suit. The suit is largely a onepiece design. The helmet is integrated into it, the boots are integrated into it. Unzip somey will interfaces on the suit, climb into it, zip the attachment points up, and there is an umbilical on the leg of the suit, a kind of connection that provides gases and electrical connections to the suit so they can use the integrated microphones and the helmets. It also provides breathable checks, andit leak if we were to have an emergency scenario, it would provide pressurization to the suit. Notable to mention, these are different suits from what you might imagine for the spacewalks these are called intravehicular activity suits, made for being inside the vehicle. What we just saw as Chris Cassidy was between the hatches and that vestibule space, he was fixing the docking target we mentioned earlier. I like to say it is like x marks the spot. It is what the vehicles aim for when they arrive at the iss. One step closer to bringing bob and doug home. We are fortunate, the weather turned out pretty good in the gulf, looking at a pensacola landing site right now. Just before we went on air today, we had the 2. 5 hour prior to undocking weather briefing and it is still looking good for an ontime departure today. Really glad to see the weather cleared up, the storm moved toward the atlantic. Which opens up our opportunities for landing sites in the gulf of mexico. Mentioned earlier, pensacola being the primary site today. As they continue to work on the hatch, lets check in with gary on the iss Mission Control room side of things. Thank you. We are watching the same view you are seeing, Chris Cassidy king on the apass hatch on the iss side. The hatch on the dragon side is closed. This is an important set of procedures cassidy is working right now. You mentioned the docking target, x marks the spot. Thes important to fix to apass hatch. He will also take some pictures for the ground crews to know the apass was configured prior to closing. Thee was white padding on outside, just for safety measure as the crew was moving between the hatches, everything going as planned. Be closed inl about 10 minutes. It will be closed very soon. The crew ahead of that timeline. Hatch closure, you can see there will be a space between the dragon hatch and the space station hatch, that is called the vestibule. About 15 minutes after they give the apass hatch, they a go for the depressurization of the vestibule, all control from the dragon side. We will watch very closely here from Mission Control in houston. Depressurization of the vestibule takes time. It takes about an hour to get to vacuum to their will be a check of about five pounds per square take too longont to get to five psi, once they get there, bringing the festival down to a vacuum creates more of a temperature swing. We need that to dampen a bit before performing a reliable leak check. It will happen at the five psi tok and continue down closer depressurization of the vacuum. That is coming up very soon. The go no go for actual undocking to occur a little more than an hour after depressurization at work 20 p. M. Pacific, and if everything aheado plan, the crew is of schedule, and looks like we will get them undocked ontime, 4 50 four pacific time, everything going great from the iss side. Back to you in hawthorne. Thank you. Now the hatches closed and bob and doug have donned their suits, we will look at the cash to close. Is an acronym. It is an integral part of the docking system. Before closing it, we saw Chris Cassidy working to attach the docking target to finetune any alignment for the approaching spacecraft. Not required for undocking, but obviously we needed there for the next spacecraft that arrives at that board. Knowing given us how is every thing going . Things are great, i super excited to be here. [no audio] i thinkc what we heard there check between hawthorne and the crew. Thats a good sign, it means they are well underway in the suit donning procedures, which is getting into their suits. One of the first steps is making sure the microphones work in the cabin and in their suits. What we were talking about earlier, once we get through suit donning, which will have a couple of steps and it, first with the com checks and then to make sure they are tight. We will go through Mission Control teams verifying we are go to depressurized the vestibule. Again, that is the space between the dragon forward hatch and the hatch adapter. You saw some flashes and that area down in the vestibule, that is Chris Cassidy, commander of the iss, in that space, and he is taking pictures. He will send those back to the ground team so they can check out how the hatch closure procedure went. He will be able to provide detailed photos for future use as well. A the vehicle undergoing number of reconfiguration steps at this point. With crew on board, we have to make sure life support and thermal systems are operating at nominal. Thevolume in between vestibule, the pressurized area, now at about 14. 7 psi, it will vent that through some vent valves on the dragon side of the system. One of the two astronauts returning to earth in crew dragon is doug hurley. Tworeviously flew on sts 127,issions, on and stf 135, the final say shuttle flight. Here is a closer look at nasa astronaut doug hurley. Very excited. Are you ready . Oh yeah. I think we are ready, we are certainly ready. Joining the spacex demo 2 test, a marine corps colonel and astronaut. He piloted Space Shuttle endeavor and atlantis for sts 135, the final say shuttle mission. Introducing nasa astronaut doug hurley. [applause] it is a lifechanging process in so many ways. Space, it is overwhelming and some respects. Station, the rumbling, the shaking, the acceleration. When the engines shut off and you go from, in the case of the gstle, from 3 gs to 0 and things just start floating. I remember distinctly thinking what just happened . To see a rocket launch in person is a pretty emotional event. I remember the first time i saw a shuttle launch and it was amazing. And then why saw a launch with that is quite the emotional experience. My name is doug hurley and i am the spacecraft commander for the demo 2 mission to the International Space station. We are doing the first crude flight for nasa and spacex, so this is the test flight to prove end to and from lunch to docking to iss operations and then entry dissent and landing. Hoursl wake up about six prior to lunch, you eat excess, do a medical check, you start to get your comfort garments on, get a weather brief, and you go get suited up, and it is the same suit up room that astronauts have been using since apollo. There they are, nasa astronauts. And then we walk out, jump an teslas and in our drive to the pad. We go through all of the preflight checks and ideally we are off to the races from there and launch. Lift off godspeed, bob and doug it is about a 9, 10 minute ride to orbit. We go through the on orbit activities, do some manually flying of the vehicle. We obviously sleep on the vehicle. And then we continue through the rendezvous phase where we end up in front of the space station the next morning ready to dock. This is houston. Bob and doug, welcome to the International Space station. We will spend likely a few months on the space station and we will be able to do some onboard training with regard descent andntry, landing. Getting to do the mission with bob, we and friends almost 20 years, and the whole experience for me is what we are looking for. Doug personally has worked so life, to getire where we are now. It makes me happy to see that he gets to be part of this mission, the spacecraft commander. I am glad to see his hard work and his dream come true for that. We are so proud of him. It has been a huge amount of sacrifice and time away from home, but the fruits of our labor are coming to fruition. With doug is nasa astronaut flewng bob behnken, who mo previous shuttle issions. Lets learn a little more about him. When you go through the launch day preparations, there are a lot of moments that stand out to you. One is the celebratory piece of it, when you are walking out of the suit up room and getting into a vehicle that takes you to the launchpad. When you close the hatch, that is when doug and i are in the vehicle and it is our vehicle and we are in control of the mission at that point. Test pilots, they fly into orbit around the earth. Always a balance of managing risk as you go forward a execute a test point and way to collect data. See the a sound and you light, the expected light, does it sync up . Trying to dissect that in real time in your head, a lot of things happen like that on launching a vehicle. Missouri, and air force colonel and flight tech engineer, and flew aboard they ship endeavor twice. Introducing nasa astronaut rob behnken. Bob my career at nasa has spanned a couple of decades at this point. I arrived with the class of 2000, went through the Training Program primarily focused on the space station the Space Shuttle and the iss, learning those systems, i have launched a couple of times on vehicles. The second time was definitely different than the first time. You feel a little guilty, should i study one more thing, is there one more piece of information i should get . Am i prepared or not . Thats different from the first flight and where i am right now. For me personally as a spouse , watching everything bob has put into the bill into this the last five years, his perseverance. For both of us, the way our minds work, it wont be until the mission is complete that you have a chance to savor and celebrate it. [applause] level, ieeply personal am really excited that my son will have a chance to see me launch into space. Being an astronaut has been a little bit of an abstraction thing for him because he has seen me do it in old videos but he had not seen me do it for real. I am excited for him to see me launch into space. 2ally my role on the demo mission is to make sure we get the vehicle tested and evaluated so we can move on to more Operational Missions on the iss. Ignition, lift off of the falcon 9 and crew dragon godspeed bobpacex, and doug we have a lot of objectives on board the vehicle that we need to accomplish to make sure it is good to go. We will do everything from actually talk from the dragon ouz. Cle to russian s we will get a good feeling for where things are in place. We plan to do all of those things as part of the test mission. Welcome to bob and doug. The whole world saw this mission and we are so proud. I am looking forward to that moment when he enjoys the accomplishment, when he realizes we did this. We did a great job, we accomplished what we set out to do. Whenever he lets himself feel that and experience that success, thats what i am looking forward to for him. For me, i am looking forward when he touches down at ellington and nasa brings him home at the end of this. The thing i am most looking forward to is actually ending up in the water at the end of the mission. Bit ofpecting a little vomiting may be to happen. When we get to the opportunity to do that, i am looking for that celebratory event for both of us and the water at the end of the mission. [laughter] so a great view on your that is from the camera behind bob and doug, bob on the right hand. [indiscernible] spacex, we see the same, thank you. There is confirmation of some great milestones, forward hatch closed, suitdonning hatch closed, suit donning complete, anything nominal. Bob and doug raising their visors and getting a little more comfortable. View because it makes me feel like i am in the backseat of crew dragon going along for the ride. Hatchhave the apas closure during that brief video as well as a leak checks. We have some milestones coming up. The, we will look for vestibule to pressurization, bringing that space down to a on your screen, lefthand side, is the commander. On the righthand side is the pilot. In front of them are the three touchscreen displays in the dragon spacecraft. Complete, thecks next step is depressurization. They are checking out all of their screens. The crew will be monitoring during the departure portion of the flight. On the way up they had a couple of opportunities to do some flight tests. Seeing how it would fly. Fortunately it is in a thomas vehicle. This should be an a thomas flight home. Flight home. That is right. Right. Just trying to take a look here to see what the vestibule is pressurized at. Looking at the data. 14. 1 psi. Pounds per square inch for reference at sea level on earth were at 14. 7 psi if youre 1,000 feet above sea level then youre at 14. 1. Just happened to look that up earlier today. Looks like the camera feed might be another handover. Were waiting for it to begin of the were getting calls from the crew theyre getting ready for that. Inches this are moving along smoothly and everything is happening on time for an on time departure from the International Space station today. That call will actually be the ground side will do a couple of checks and make sure that were go and all the data on the dragon side looks good and there should be a call letting them know that were planning to step into commanding depressureization and issue that command. For that command were in joint operations. So, what ha means is that the Mission Director flight director in hawthorne pass passion ground will step into vestibule depressurization. The hex is configured for maximum cooling. Copy that. Some boards going up to the crew dragon crew as you mentioned the core. The crew operations responsible engineer here on the ground at spacex i spoke with the team and Mission Control houston and decided yes, they are almost ready to begin that depressurization of the vestibule and this is the exact opposite procedure we saw on the way up. And sounds like vestibule depressurization has begun. Working to bring that phase down to a vacuum in preparation for dragon to depart that depressurization call coming at 3 04 pacific. Moving quickly. Data shows were currently at 12 psi in the vestibule. Just dropped below 12 and only less than a minute ago we were at 14. 1 and should only take 510 minutes to drop down to 5 psi Holding Point that gary mentioned earlier. That hot will be for 25 minutes little bit of physics there. If you expand the gags which is whats happening here. Were taking the gas and the vestibule and venting it away. Taking the molecules in that and sort of expanding them out. Temperature tends to drop. So well want to wait for that temperature to equalize because as it warms up the remaining gas will bump a little bit in pressure and that can look like a false leak from either the International Space station side or the dragon side. So we give it some time to equalize the temperatures and once we feel confident that the pressure is stable in the vestibule then we perform the leak check and look to see we dont have a drop in cabin pressure on the dragon side and things are looking quickly. Were at 8. 5 psi, pounds per square inch in in the vestibule and as you mentioned we were at 14. 1. So add 8. 2 now. And then well be waiting for that 5psi point where well do the 25 minute hold. Kind of to think among the other fun facts pressure at everest is about 4 psi so that will give you a sense of the pressure in the vestibule would you being at 12,000 or 13,000 feet. Interesting. Thats near the same pressure as in an emu or extra mobility unit. That way theyre more able to easily move their fingers and their joints so that that workout side isnt as difficult. On the emus, at this roughly 4 psi, youre not breathing the same mix of air that you would be breathing here on the ground. Here on earth were breathing 70 night trojan and 20 of oxygen. You need the oxygen to be higher, so when you go to those lower pressures, they transition to oxygen right . And looking at the data looks like were at 5. 9 psi in the vestibule. Coming up pretty soon we should be expecting that call of reaching that 5 psi level that were waiting for. Mission controllers, you can see on the screen specifically who they refer to as systems officer is will be monitoring for the pressure theyre responsible for the life such port systems and thermal system on vehicle so theyre most familiar with that telemetry and able to make those calls for no, maam innatural leak check check complete and the vehicle configures into appropriate transition modes. Just heard its complete looking at 5 psi nearly on the dot. I think what we can expect next is a call from from the crew to let them know the thermal hold period is beginning and then we will probably also hear when the leak check is complete and the results of that leak check. Listen being to to the been background i just heard a conversation prompting on operators on next steps for start of this thermal hold period and then the leak checks. Bob and doug really just sitting tight in the cabin at this point in their suits. Able to monitor all this information from their 3 touch screen displays in the vehicle. Were about an hour and 20 minutes from the undocking window. They get more than one chance. They only had that single second they had to launch so they would wolverines up pert fectly with the International Space station. Its little different coming home. Those burns will really be what help us wolverines up with our targeted landing site. Right now looking at pensacola and scheduled splashdown tomorrow. Theres a view on your screen left hand side of the International Space station. So thats coming from note 2. Looks like commander Chris Cassidy looking down and sealing up the hatch. Probably checking the seal for foreign debris, making sure not even a hair that could impair the hatches from getting a good solid seal. Looks like another handover of our satellite system. Those are tracks. So they know when to expect those so they can target communications with the crew. Tkpwarry, can you give us an update . Were seeing the same results of the vestibule depressurization. Went down pretty quick. Suits are looking pretty good and we just saw Chris Cassidy aboard the International Space station finishing out his closeout dutyies. That was that long tube on the inside putting some items there getting ready for next crew coming up later this year. He closed the pass and con if pig erd that and thenninging for any foreign object debris and closing that node to forward hatch can that will conclude Chris Cassidys duties aboard the International Space station for today. The primary role of undocking monitoring goes to bob and doug with Mission Control houston and Flight Controls monitoring from the ground. Chris cassidy will be able to go inside of the cupola. Windows shutters are scheduled to be shut but hell be able to open them for what Situational Awareness and take closeout photos of dragon departing. Were just again in a Holding Period then of course the go, no go foredocking and then eventually well get to separation right now scheduled for just after 6 30 central time and 4 30 p. M. Pacific time. Everything looking good from the International Space station side of things. Cassidys duties wrapped up for today and closing both of the hatches with that well continue to monitor this thermal destabilization wool pass it back over to you in hawthorne. Were look at 27,600 pounds. Of course in microgravity thats nearly nothing and theyll have about 3 days of food and snacks on board. Were planning on them get tomorrow midday for us here on pacific coast. And so, those 3 days of food and snacks are there just in case that there were to be some weather crop up that wasnt expected and they can remain in orbit for a couple of days after undocking and be perfectly fine. That he right. The supplies on board are there in case we had a wave off scenario. If we had some kind of weather come in or something happen to the spacecraft where ground teams would want more time to troubleshoot and understand and see if they could recover, that would give them time to do a couple more orbits and then try again at another opportunity. Right now vehicle looking very healthy. Its been very healthy the entire time its been attached. While we are in the Holding Period right now of depressurization were holding it at 5 psi, 5 pounds per square inch to make make sure there is no difference in temperature that is causing that to fluctuate of the of a look ahead at the undocking we are expecting to see undocking last about 5. 5 minutes. And during that time, undo been been to are dragon looks different than for other vehicles. When the soyuz on the International Space station it undocks by using springs that push it away from the space station and dragon will use undock burns. With. 15 seconds for 5 for the other and just do just enough to bring dragon away from the International Space station. So that it can conduct its departure burns later. Dragon actually has 16 drake cothrusters on the base of the spacecraft and 12 on the surface and 4 under the nose cone around the forward hatch. The nose cone drake cos are disabled for this portion of the mission and disabled for the 3 expected burns which would be that undock 1 burn and 2 burn and referred to as departure zero we have that many for vehicle and they could still have full control and the ability to control the vehicle to apply thrust to it. If youre wondering whats keeping them attach. There are two sets of hooks. So 12 hooks. When that undocking sequence begins, the hooks will open and the umbilical which provides power from the space station that will detach and then those short burns will fire and crew dragon will be on its way. Those 12 hooks are what also provides the seal as well. Op the way up when we docked in late may that was one of the major milestones after we attached verifying the capture system and had completely closed. As you can see nasa astronaut and commander of the International Space station Chris Cassidy is staying behind on the International Space station for right now and hell return to earth aboard a soyuz in october. But he has just closed the hatch. The dragon hatch was closed and now just even creating a more firm seal by closing the hatch on the front end of the space station if it had a front side. So thats where theyre at and you saw them taking pictures recording that process and hell be an ill to deliver those to the ground later for analysis and just to check out how everything went this first departure with the crew. Good view from the interior of dragon. Were looking at the pilot side seat. Thats bob behnken and you can see doug hurleys hands on just behind him. If you look on the right hand chris, i owe you shortly what the undock sequence time is. That was a call to Chris Cassidy on the space station checking out and making sure that they were echoing no forward hatch closer and things progressing well. When bob and doug got into the spacecraft they had few things to do. They wanted to make sure the foot rest are firmly attached for the ride home. Then you can see a window over to the right of your screen, those had window covers on them and they removed most of those but theyre Still Available so when the crew goes to sleep theyll be able to put those window covers back up. That will keep them from seeing a sunrise every 45 minutes and or sunset because the space station is or builting earth at 17,500 miles an hour. They see quite a sunsets and sunrises 16 ct. You can see how bright the window can get. Now that window is right next to the side hatch. Back strip next to that with indough that is a hand rest, a hand hold and next to that is side hatch and thats what bob and doug will be egregsing out of after successful reentry and parachute deployment and flash down. That thats what we saw the crew climb in. Once they cross the last place they were on earth in that white room they climbed in through the side hatch but thats the nose cone opens up and as you said exposeses the thrusters underneath and they floated through that hatch. They arrived that one and departed through that one. But once they get back on earth thats primary the egress for bob behnken and doug hurley. One of the steps right when bob and doug had entered vehicle on the launch pad was to do a leak check of that hatch. Pretty noteworthy about this mission. There are a lot of firsts for this mission. Its our return to flight from american soil. For the first time in 9 years and also going to be the first splashdown in over 45 years. On july 24th, just a couple of weeks ago that was 45 Year Anniversary of the last apollo capsule splashdown so a long time since weve seen a crew splashdown. That typically happens with a landing. Were looking to land if the gulf coast means a much quicker ride home for bob and doug once they get back. Well have 4 main khaochutes de and recovery actually looks a little different than it did 45 years ago. So we have some pretty cool recovery boats and helicopter pads on them as well as what we refer to as an arm or crane on back of the spacecraft. Excuse me on the back of the boat. It will scoop it up and put it on the deck and theyll secure everything and then open up the hatches and hope bob and doug egress onto the recovery ship. The crew will be waiting until that arrives with that drain to lift them up on the deck deck and theyll get the chance to get out on the boat instead of on the seas. Those are areas where Recovery Teams can quickly recover the crew within a couple hours of their splashdown. But usually much faster than that. We have 3 on east coast of florida. One of them of course being cape canaveral. S we were watching this Tropical Storm has become a hur kaeub. Landing in the water is difficult than landing on land because you you have to look at wave height and wind speed and spaces in the gulf are looking good than on the east side of florida. Luckily no major impact 0 weather on the west coast. Did winds and no significant lightning. And no significant rain is projected and i think importantly as well the wave heights which are important for the spacecraft but also for the recovery to get close. Currently we are in a hold period of the vestibule pressurization between the hatches and the astronauts fly through. Why dont we check in with gary at Johnson Space center in houston. Hear how things are going on space station side and how do things look like at johnson, gary . Were just looking at that thermal stabilization waiting for it to stabilize and balance out its swings so we can get a nice solid leak check before continuing down close 0 vac cool. Chris cassidy performing those duties and taking out closeout photos and making sure everything was okay. He loaded up that pressurized adapter. He will be watching bob and doug. Theyll bible to take pictures as they depart the International Space station. But the primary monday it heth role will be in the hands of bob and doug. As soon as we continued this depressurization close to vac dual just about 4 20 p. M. Pacific time were looking to conduct a go, nogo little bit less than an hour from now that well con tkurbgt to start the undocking sequence. It will tpeudz cali separate dragon vehicle. So far everything looking good. 5 psi looking to continue that depressureization soon. Everything looking good from the International Space station Flight Control room and well send it back over to hawthorne. If youre justin joking us, we dragon spacecraft is currently forward hatch sealed. Earlier today bob and doug had loaded some powered cargo in the vehicle after seal the hatches on both the International Space station side and stepping into we did leak checks. Were holding it at 5 pounds per square inch. This is evening for them so its 10 30 almost theyll be ready to go to sleep soon. We want to make sure that the astronauts are well rested and even though the crew on the International Space station will get their sleep period soon well see bob and doug get theirs and theyll have about 8 hours to get some shut eye. I want to make sure theyre all rested if they have to take on contingency actions and read back op the status of the vehicle if Ground Control are unable to properly assess the health of the system. Kwoeupb of the nice things is they can see the health of the vehicle and bob and doug able to issue commands. If youre wondering once dragon did he parts today were and going anywhere. Were going to be live all way until they come home to earth tomorrow. Some of the bigger things we can look forward to after undocking weve got a couple of departure urpbz about. The first two will bring dragon up and over the International Space station and then the next 2 will bring it down and in front of the space stays before a phasing burn later this afternoon to help it really sink up with its landing. As part of those burns they have to do the first couple of burns are really just to adjust the app gee and pair gee. App gee is the highest point or furthest away with from the planet and the pair gee is lowest point. Right now drag tkpopb and the International Space station of course still docked and theyre in a roughly circular orbit. It will be slow shreu reducing our pair gee and then just so we get our or orbital pathway where we can when we issue or departure burn well be able to wolverines up landing off the coast of florida near pensacola. As you can see bob behnken and doug hurley in their suits now. But after the first couple theyll be able to take them off and wont 92 ed to put them back on or don them again until tomorrow and then theyll wear them the entire rest of the ride home. But for the majority of the rest of the evening after the departure burn theyll be able to take off the space suits and enjoy their ride in crew dragon. We conducted some habit ability tests. There are two astronauts flying today that are future cruise are scheduled to have 4. We brought in a couple of the space stations current residents to test out what its like to have multiple people in dragon once its in microgravity and performed lots of test in side the vehicle and had a little sleep period to see how it would be to sleep with 4 people in the vehicle and things went pretty well. Looking forward to that first crew one launch later this year. 12k34r right now and dragon and International Space station about 422 kilometers above the earths surface. And going 6. 6 kilometers a second. If youre looking at miles looks like were 261 statue miles above the earth. Theyll be coming up across hawaii not too long from knew. Bob and doug inside the portion towards the right of your screen. You can imagine how theyre seating up right. The digs plays would be looking up towards the direction the nose cone is opened up and behind them is the trunk of the spacecraft. So that top side the black shiny part is our solar panels on the body of the spacecraft and below that the white side of the spacecraft is the radiator. Thats where were radiating our heat generated by the avionics and of course from bob and doug they will selves. Generating a little bit of heat based on how many physical activity theyre doing. Looks like right now theyre pretty comfortable actually the vestibule leak check has started. Theyre testing to ensure the solidarity of the seals between the hatches. As we saw earlier, they checked to make sure there was no foreign object that is a good data point. We have you loud and clear. We just heard some checks between the crew and the core here on the ground. They sent to act as the advocates for the crew on the ground, letting them know where equipment might be stored. If there is any troubleshooting that the crew needs to do. They interact with the crew. They typically train very closely with the crib. Crew. , once we get away from this we will actually transition to what is referred to the ground. It will be issuing all of that communication. Their sons voted that that would be the zero g indicator between them. They are doing something very interesting and with a lot of history. There was an American Flag on the International Space station that flew on the first Space Shuttle mission and the last mission. It was to be retrieved by the next crew. They are also bringing home that piece of history. I was looking up some facts earlier. First Space Shuttle mission was in april of 1981. That has been there quite a while. It has been on the station for nine years. That is a long time to be in space. It has probably traveled more miles than any human ever. The crew got on board, they have had a relatively busy day. They closed the hatch. They are currently in the middle of a vestibule weeks check. We have brought that down to this point. Si at we are verifying that there is no leakage to either side. The International Space station is also in the current opera configuration for that departure. They are feathering the solar arrays. What they do is turn and lock them at an angle. The thrusters have exhaust that is emitted. We dont want those to contaminate the solar arrays. That makes them less functional. Plumes, we do not want to put extra stress on them. Operators in Mission Control in houston and she control here in hawthorne are looking at the health of the vehicle systems. Right now we are and what is called joint operations because of our proximity to the International Space station. Both teams are conducting Health Checks against the flight rules. Verifying that their procedures or go for a docking. There are two invisible lines that vehicles cross. These are governed with specific rules. That smaller sphere around the space station, we all that orbit space. Were to lose control of any of its thrusters, it would be safe. It is not hitting the International Space station. You need to be 24 hours safe. Ground totime on the troubleshoot anything that might arrive. They could send commands to the vehicle. Those are typically hold points on the way up for our vehicles. On the way home, we will not be stopping. Will have the splashdown plans for tomorrow. Here is an external view of the dragon spacecraft from the International Space station. That structure you see is the nose cone. The commander above the space station closing the hatch. Doug are closing that hatch. That is later on in the mission. Another thing we will see happen is the jettison of the trunk. You could see the solar cells wrapped around it. That will be removed. That will not return to earth. That is where on the way up we would be able to store any unpressurized cargo. The astronauts could use that. It is an extra trunk. It is not for any of their personal luggage. It is great for any unpressurized cargo. Important. E pretty we did not need to see that. Not during this mission. Hopefully we wont. Its the trunk also contains the thermal cooling loops for the vehicle. You can let that breezed by you to get some nice cooling. In space you have to radiate away all of that heat. Take advantage of heat transfer. They did one of those very recently. They used thrusters to reboot it. In preparation for this october when there will be a soyuz vehicle arriving. It looks like right now the International Space station is over the North Pacific ocean. It looks like they will be over the course of oregon. Kind of a preview of what is coming up next. Currently conducting a leak check on the vestibule. Theyis important because need breathable gas. The lifesupport system providing the cabin with oxygen. That is about what we would have here on earth. We are not losing any of that precious gas. It has been open this entire time. We have seen a few milestones happen already today. That allowed us to step into this festivals depressurization. Ime bring a close joe vacuum as we can. We will be looking for a gono go. Ground operators will be looking at the health of the vehicle. Verifying the configurations. We will expect to hear a call up from the crew. Removing those 12 hard capture hook. Do a couple of undocking burns. Short little thrusts. Very short. You described them as pulses. Burns areeparture short to start off with. Those increase the opening rate between the spacecraft and the International Space station. That is quite a large burn. It should last a few minutes. Definitely the largest thrusts of the return portions. With ouro line us up potential landing site over pensacola in the gulf of mexico. Dragon will get a chance to use the heat shield. Then we will have those shoots deploy. I learned something very interesting about parachutes. They dont always deploy right away. They expand very slowly. Even with those chutes opening slowly, bob and doug somestill experience acceleration. Both of them have been test pilots. That is something they are probably unfamiliar with. You get this close up view of crew dragon. The nosecone is open. That will be closed after the departure burn. That is how they entered the International Space station. And thats how they will exit. This is a great view. This is where we will start to see some of this movement. Some more facts about our astronauts. They have had two previous flights. This is their first flight not on a Space Shuttle. They have logged 63 days above the space station. Will have a total of 93 days in space. Bob behnken will have logged a total of 92 days over his three flights. Very close. Adding up some time on the International Space station. Behnken getting some critical opportunities to conduct the number of spacewalks , going outside the space station. Replacing power units and batteries. They replaced some older batteries. They conducted for spacewalks. Doug hurley was inside. Operating the robotic arm. They have conducted 10 spacewalks in their career. They are now tied for the most. We had a good best bully check. Vestibule leak we copy. Good news. There is confirmation from the core. One more milestone down. That wraps up the completion of the leak check. It was brought down from the pressure of or team one pounds per square inch. Hold. Ad that and then they conducted leak checks. Now they are offset quite a bit. If we did not bring that vacuum, it would almost act like that. There would be a little bit of pressure left in there. As the seals were kind of opened up. We see a little bit of propulsive thrust. We want every trying to make sure there is as Little Energy and applying that little bit of asher on the pressure on the adapter. Actually now would be a great time to hear what is going on at Mission Control houston, get an update on the space station. Gary, can you let us know how it is going . Watching the depressurization of the vestibule now, a little less than 4. 5 psi, slower than what we saw an hour ago when we went from about the pressure of sea level down to five psi, that only taking a few minutes. Are is slower but we seeing a good depressurization, being controlled from the dragon side. We are monitoring here in houston. Some of the views from outside the International Space station looking at the dragon vehicle, some of the cameras being controlled from Mission Control in japan. Withng here in houston japanese Mission Control, making sure we get good use from those camera views from those cameras, we will get a pan as a dragon moves away from the space station. Fasterst burn, moving from the station, we will get a nice view from the japanese side of the International Space station. Right now the International Space station configured for undocking and we have the solar arrays in a locked position. Undocked sequence gmt, 28for 22 30 minutes from now. Gary you heard that from capcom here in houston. Pacific. E is 4 30 p. M. That is the ontime start time for the undocking sequence. Once that kicks off, that will be the initiation of the umbilical retraction followed by 12 hooks keeping dragon attached to the International Space station, they will be released six at a time. Undocking burns, just short bursts that will physically separate dragon from the International Space station vehicle. You can hear everything is according to plan and we are right on the timeline, that physical separation. As long as we are on the timeline, it should happen at 4 30 p. M. Pacific time. We will continue to monitor the depressurization of the vestibule from here in houston. Back to you and hawthorne. In hawthorne. Leah once bob and doug arrived at the space station on may 31, it did not take long to get to work. During the time on board the orbiting laboratory, bob ventured outside the hatch four times and doug used the arm to ommand the stations robotic arm outside. They continued science and research inside the orbiting laboratory. As we mentioned, they also exercised the mandatory two hours each day. Many of you have seen some of the incredible pictures they took of our home planet. This is one, a beautiful view of the sun glinting off the ocean. We also have one of the Comet Neowise. The astronauts had a great shot of that from the International Space station. Siva they had some really cool opportunities and we were sharing a lot of those photos on twitter. Earlier this morning as they were preparing for undocking, they had work to do as well as packing cargo in the dragon spacecraft. And ve room for power powered and unpowered cargo. They are bringing back about 330 pounds of cargo. Most of that is science and sampling hardware, about 200 pounds of it science happening aboard the space station. The dragon has the ability to return a lot of that cargo so it can come back laboratories on to doand we can continue human science studies on those biological samples and cold samples returning. It is something we have been doing since our previous version of cargo dragon, keeping that capability with crew dragon. Leah i was going to mention, when the astronauts know a cargo dragon is coming, they know it will get really busy with science. Cargo dragon is currently the only cargo resupply ship we have that can bring back cargo. The others burn up in the earths atmosphere upon reentry. We mentioned earlier the Comet Neowise picture and we have it now. Look how beautiful that is, the comet streaking across the sky just above the earth. I cannot imagine. Siva especially to see the glow of the earths atmosphere creating the blue sheen, it is really cool. Leah this is probably taken uppola window, which has the rest view in the house. Chris cassidy might head over there after undocking today to take a look outside and watch his friends depart. Uphill,hat on the way he was up there taking pictures of crew dragon as it arrived. We will also be returning some vehicle hardware like spacewalking cooling garments, which the astronauts wear under their suits. There are tubes of water they can control the temperature of. When they are in the sun, it can be a few hundred degrees fahrenheit. In the darkness outside the space station, it can be 250 degrees fahrenheit. That cooling norman is also a little bit of a heating garment or that cooling garment is also a little bit of a heating garment. They will be returning those, and glove connectors for refurbishment on earth, along with crew items. Nasa will have specialist in the Recovery Team that can quickly uncover and return the cargo shortly after dragon returns on the recovery ship to shore tomorrow. It is interesting, you are mentioning the temperature variations. That is not something you see on earth because we have air and humidity that helps regulate the temperature. You dont have all of that atmosphere around you to help that. When youre in the sunshine, you get the full brunt of the heat and you are not, you get the full coolness of an a clips. Thats why you need those suits as well as the thermal systems on dragon to regulate the temperature into something that is palatable for humans. Leah speaking of heat and atmosphere, when the astronauts reenter tomorrow, they will experience temperatures up to 3500 degrees outside the crew vehicle. Inside, it will be nice and cool, they have air conditioning and their suits will have cool air venting through them. Reentrya pretty fiery tomorrow. [no audio] siva the view on your screen of the dragon spacecraft. Now looking at a camera positioned just behind bob and doug. Seat, bobe lefthand in the righthand seed, monitoring the vehicle. It looks like they have the forward view on each of their panels, you can tell that because they have an attitude ring and a view in the middle that has their procedures and cue cards up for what they can expect. Speaking of which, the next thing we will see is final configuration for undocking. For the final configuration. We expect for that to happen, the command to occur right on 4 30 p. M. Pacific time. Shortly after that, we will have some undocking bursts that will separate any sort of friction or forces that may have staticly built up while dragon was on the station. Separation is planned for 4 34 p. M. Pacific time. 4 54 to be exact. Laws have to be detached and they will use the short burst to begin their short journey home. Siva a lot of those steps are automated once we issue the command for undocking configuration. Operators will modify will monitor the transitions. Flight computers on board with redundancies, you have ways of resetting them to understand any falls. Thats part of the job of Mission Controllers, to understand the health and status of the vehicle. Flight computers will transition the vehicle through a number of states and activate those thrusters. We will have a couple of shorts from the Service Section, on the lower part of the vehicle just above the heatshield. We will not use the forward bulkhead draco thrusters under the nosecone. Thatll see those bursts will take dragon up and above, away from the International Space station into a slightly higher orbit, letting the space station move ahead. Those will be departure burn zero and one. That will increase the opening rate, the distance from the space station, and moving it out of the keep out sphere and eventually they will approach ellipsoid. Departure burn three as you mentioned earlier, a coolympics burn elliptic burn. It doesnt have a widely varying apogee. We were talking a little bit about the keep out sphere and the approach ellipsoid. Those are imaginary spheres. The keep out sphere being a 200 meter radius, i believe, sphere, itund the iss represents the space where any areas needin those command. On the big loop. At this time we are removing iss power to endeavor. Copy. Capcom ll therefrom there from capcom. Bob and doug no longer receiving power from the International Space station through the umbilicals. Leah dragon operating on its own power, gathered from the solar powers around the trunk of the vehicle. That is a similar look to the new cargo dragon. For all of the Dragon Missions until now, we saw solar wings with solar arrays and now the solar arrays will be wrapped around the vehicle like we see here with crew dragon. Siva it adds to the overall reliability of the vehicle anytime you have a mechanism in space that is a potential to go wrong. You need a motor to drive it. Panelswrapped solar around the trunk of the vehicle reduces that little bit of complexity and it is lighter, too, so we can add a little more cargo and add more to other parts of the system. On the others of the trunk is the thermal radiator. We have fluid running through that almost like an air conditioner. That fluid is pumped through different points in the vehicle. Earlier, we heard a call from the core mentioning the crew could adjust the hex, or heat exchanger, to the position they wanted to control internal cabin temperature. That part of the cabin air as it goes 30 revitalization system is getting passed over goes through the revitalization system is getting passed over the heat exchanger. I hopeh like they both like it cool or warm. Siva they are close friends. I am sure it is something they worked out over time. It was i took a look and about 76 degrees fahrenheit in the cabin, so to my tastes. Leah i could survive in that. They are very close and they were part of the same astronaut class. They went through astronaut training together and they now get to fly a onceinalifetime mission like this. Siva yeah, flying a test Mission Together with your best friend has to be fun. Two just a look at these Mission Controls come on the left, the iss light control room in houston, that is the team Flight Control room in houston, that is the team controlling the International Space station side of operations. It is staffed 24 hours a day, seven days a week, 365 days a year. We always have someone in there protecting the astronauts in space, egging sure everything is working well on the iss. On the right, once you introduce us to Mission Control hawthorne . Siva it is actually right behind where we are standing here in hawthorne. In that room are a number of specialists along with primary dragon operators. If youve seen other webcasts, youve seen Mission Control as well. We see the same we use the same control room for falcon operations. The third row is where most of the primary operators are and we have other specialists in other roles. Careerso devoted their and expertise to understanding the nuances of certain systems. Even the health and safety of the crew. We have a Flight Surgeon, a nasa Flight Surgeon, in that frontrow and he is there to havesure if bob and doug any complains from a physiological effective, he can weigh in. Sure bob and make doug get home safely both from the vehicle performing well as well as their own individual health. Leah speaking of the vehicle, the vestibule pressure now at downthan. 3 psi, getting as close as it can to a vacuum. Im glad you mentioned the astronauts have a flight doctor. They have someone specifically assigned to them for all of their preflight nicole and inflight preflight medical and inflight medical. Someone able to speak with him at almost any time, and conducts health and wellness checks, and makes sure every thing is going well while they are in the rough environment of space. Siva among the cargo they have a board is emergency medical kits and medical sort of medicine and trauma kits they would use if there were a significant medical emergency. The Flight Surgeon helps them if they are working through firstaid and gives them instruction. If they need to do anything in an emergency scenario, it is those two taking care of each other. When the hatch was open, the entire iss crew taking care of each other. About 13oint we are minutes away from the transition for undocking and about five minutes after that we will have the two undocking burns, just short bursts from draco. We expect that to happen around 4 35 p. M. Pacific time. nogo earlier. Ish dragons departure designed to be fully autonomous and requires no action from the crew on board. Station commander Chris Cassidy will not be the prime for monitoring the dragon departure, that will be the crew on dragon, they can monitor with the screens you see here and they will be backed up by Flight Controllers on the ground. As always, bob and doug can send commands manually to the vehicle if they need to. Siva once the undocking sequence is complete, dragon will thrust away in a series of three carefully choreographed maneuvers, four departure burns, distance, ande then it will be distance. Trunk separation, closure of the nosecone, deorbit burn and deployment of main parachutes, and finally slashed down off the florida coast, at which time our crews will recover bob and doug from the water. Siva at this point, a little ahead of schedule. We always put in a little margin into the schedule in case there are any problems, for example, the suits, or if any check to not go as planned. Right now, the planned time to perform the undocking commands to the spacecraft will be around 4 30 p. M. Pacific time and we expect dragon to go through a number of state transitions as well as transitions of its lifesupport system. Shortly after, we see the draco come to life briefly just to unstick us from the space station and thrust away from where it is called home the last 63 days. Leah those are the Services Section draco thrusters. We dont want to use something as powerful as the nosecone thrusters, the forward ok thrusters just forward bulkhead thrusters just yet. Siva the forward ok thrusters are a little more efficient because they expand the propulsive gases a little more. The principles of providing thrust to a rocket vehicle is you burn some propellant or have what you are ejecting away from the spacecraft, through newtons laws, it is pushing you and giving momentum. Those four oak head draco dracos give a little better performance. But they are pointed directly at the space station. We of that propulsive gas are shooting from dragon would go directly to the space station, which is not ideal. Leah i just heard the call that Mission Control houston is go for undocking. Finalthe big loop, the reconfigurations for undock are complete and nominal. The ground is go for undocking at the undocking sequence start time of 23 30 gmt. Please confirm your visors are down and you are ready for undock and departure. Dragon copies, go for undocking on time, our visors are down and we are ready for departure. Capcom copy all. Leah and we just heard of the confirmation, dragon is a go to undock. Now we are waiting for the undocking sequence to begin. They are targeting that for 4 30 p. M. Pacific time, eight minutes from now. Once that begins, it will take less than five minutes for dragon to separate from the International Space station, which it has called home for two months. Siva the first step in the undocking sequence, which is again, automatic, for the umbilicals providing power, telemetry and command capability for space station dragon, those will retract. Then we will have and unlatch from the space station, releasing heart capture hooks. Hard capture hooks, which provide the seal around the vestibule. Those come in two separate phases. We will hear a call for six of those and then for all of those to be detached. That process, which takes about 4. 5 minutes, dragon will be ready to depart and push away and separated using its draco thrusters. Initial departure from station is a little different from the other dr. Vehicles, because other docked vehicles. Thrusters, using a combination of draco thrusters around the base of the castle, with the first breaking any friction at the docking port and the second slowly breaking the spacecraft away. We expect the undocking sequence to begin in the next few minutes. Siva the crew on board will be able to see the transitions, and what will be happening is the flight computer will issue itself into a state, and on every display they have a display so they can see the state of the vehicle. Those of the displays they have the up. The middle display has the cards exciting what they can expect to see. They also have to limit tree and position relative to the International Space station. Sidealso have fuse on the views on the side, showing a forward view as well as docking hooks. At this point, the umbilicals both still installed because the command has not been issued and the vestibule should be close to vacuum. Leah getting closer to the undocking command being sent in about five minutes from now. Data, theing at vestibule is. 1 psi, so not very friendly to humans. [laughter] [no audio] leah everything moving slowly smoothly throughout the day to bring us to this point, the nning their suits, closing the hatch, and Chris Cassidy closing the apas side on the space station side, as well as the forward hatch. Bringing that space close to vacuum as possible. They are conducting leak checks to make sure the seals on the hatches are solid and everything is looking good for an ontime departure today. Pretty comfy in the cabin right now. The vestibule is near vacuum, but in the cabin, it is close to where we would feel at sea level, about 76 degrees. Pretty comfortable. Bob and doug are only partially seeing that, earlier they closed down their visors, so the suits they are wearing protect them in the event of depressurization, or if there was a fire on board, they are made of higher resistant fire resistant material. As we get to this critical step of separating from the space station, if something were to go wrong, the suits would provide that critical lifesupport to them, pressurizing if cabin pressure were to drop. Its part of the reason why we spent so long in the vestibule depressurization, the operators on space station side and the hawthorne Mission Control side, scrutinizing the data for any indication of the leak through the forward hatch. That leak check performed earlier with no findings showing the vehicle is nominal and ready for undocking. Leah as we mentioned, the undocking will take a few minutes before we see the separation occur. Once the command is sent, those 12 latches will be retracted, the umbilical will be disk and aided and the dragon is already on internal power, not receiving any power from the iss. Once the umbilical is retracted and hooks removed, look for two short bursts to send dragon on its way and then things will speed up with parker burns afterward. Departure burns afterward. Just a couple of minutes away undocking,ntime 4 30 p. M. Pacific, 11 30 p. M. Gmt, the time the astronauts use aboard the iss. [no audio] [no audio] undockingr the command to be sent and about 30 seconds. Siva again, a quick preview of what we expect to happen. Umbilicals will retract and we will see those docking hooks disconnect and then we will see those undocking burns followed shortly after by a departure burn. Spacex undock sequence commanded. Copy. That undocking sequence right on time. Leah that was 4 30 p. M. Pacific time, 11 coley 11 30 p. M. Gmt. The umbilicals retracting. They are over africa. Umbilicalagon spacex demix complete and nominal. Siva confirmation of the umbilicals retracted. No longer receiving command from the iss. There is a view of dragon, currently in eclipse. Gary, hows it looking at Mission Control in johnson . Gary looking good. We are inside the undocking sequence, good umbilical retraction, standing by for the driving of those hooks. 12 hooks will be released in two gangs of six. We are standing by for the hooks. We have good motion on the primary set of hooks. [no audio] again, the first set of hooks driving the navigation lights. In this viewsible from one of the japanese cameras. [no audio] again, we are inside the undocking sequence now, good umbilical retraction and we are driving the first set of hooks hooks openst set of and nominal. Hooks on the first set. Gary the first six hooks have driving firstr set down, the second set is now driving and and we are committed to undock. [no audio] [no audio] good motion on the second set of hooks, continuing to drive. This is the final set of hooks, there are six of them holding dragon into place now. Afterwards, we will conduct two undocking burns to physically separate dragon. [no audio] Capcom Dragon spacex, all hooks open and nominal. All hooks open. Departing. Capcom dragon spacex separation confirmed. Gary physical separation, 4 35 pacific. Thrusters looking good, coming down to a nominal departure burns zero coming up shortly. [no audio] Capcom Dragon spacex the part depart zero complete. Complete. Gary you heard depart burn a zero complete, dragon moving slightly faster away from the dracos. Ng bob and doug have concluded their stay from the iss and they are back to and in earth. Separation asical the station and dragon are overg 206 t7 statue miles johannesburg, south africa. Next departure burn coming up in about five minutes. We will monitor crew dragon throughout the departure sequence, but with the dragon flying free that will do it for us from Mission Control houston. Godspeed, bob and doug. Distant to take you to the rest of the sequence, we send it back to hawthorne. Sets departure burn zero bob and doug on the journey home. Dragon ship endeavor is on a trajectory to head up and over the station before additional maneuvers take it below and in front of the station. Dragon will autonomously accomplish that through three additional departure burns with the next one coming up in a andle of minutes to get bob doug well away from the space station and on their way home. Siva a beautiful view of the relative Navigation Center, providing an infrared you of the iss as above in drug bob and doug drift away from it. As they drift away, going into the higher orbit, just balancing the force of gravity along with their acceleration, they will move a little slower than the space station. Expect the space station to move ahead as they conduct additional burns getting out of the ellipsoid and keep out sphere. They will come out below the space station with apogee about 10 kilometers below the space station. Leah next up in a couple of p. M. Es, scheduled for 4 30 pacific time and 11 30 p. M. Gmt, and 22nd to further increase the opening rate between crew dragon and the iss. Wea that view, what previously had, you can see it on the righthand screen of bobs display, a relative Navigation Center providing an infrared view from the forward hatch of dragon looking back therd the forward module of International Space station. Thats where dragon has been the last 63 days. In less than a minute is departure burn number one. That is about five minutes from separation. This will increase the opening rate. Between the space station and dragon. Leah separation occurred on time today, as with Everything Else, occurring on schedule, sending bob and doug back toward earth and home. Very exciting moment. We should hear a call at four departure burn number one. Departure burn number one is short, only about 21 seconds. It will get us on our way up out of the way through the keep out sphere and through the approach ellipsoid. The keep out sphere about 200 meters fear around the iss, and the approach ellipsoid, four by four by two kilometers. Parks in newentral york city, thats about how big that is. Leah we are seconds away from the part your burn one. These are departure burn one. These are autonomous. They are programmed into dragon and we will look for that in a few seconds from now. Siva that is the view from the space station, the two lights, the green light is the view on the righthand side of the dragon vehicle, the side that bob was sitting on. The red light is the side that doug was sitting on. Made quick work getting away from the station. Let me see if i can get the actual distance to the station right now. Leah departure burn one has 20 second burn. Burnagon spacex departure one complete. Reminder, the ground will be deactivating the big loop following exit from the approach ellipsoid, approximately 1214 minutes from now. Ok. Endeavor on the big loop. Go ahead endeavor. We cant thank you enough, it has been an honor and a privilege to be part of 63 with you. It has been a great two months and we appreciate all you have done as a crew to help us crew that dragon on its maiden flight. I would also like to thank Mission Control in houston for the incredible amount of work they have done to make this successful for dragon, and also the teams at spacex who keep us going on a mission. I would also like to wish you Great Success on the rest of your expedition and a safe flight home in the fall. Take care, friend. And stayor, thank you safe. Thank you everyone, thank you and thank you spacex. Endeavor station, bob and doug, wholeheartedly agree with those sentiments and it has been a real pleasure and an honor to serve with you. Safe travels and have a successful landing. Endeavor is a great ship. Godspeed. Endeavor copies. Thank you. We just heard some kind words exchanged between crew dragon and endeavor with bob and doug now on the way home. Iss and dragon on the big loop, dragon has exited the keep out sphere. Endeavor copies. And doug leaving behind three people aboard the iss that will return in october, Chris Cassidy, anatoly and yvonne from russia. They exited the keep out sphere, that is an imaginary sphere around the space station, a safety zone set up to govern any spacecraft arriving or departing. Spacecraft have to be configured so they would not cross the boundary for at least four orbits, even if the spacecraft were to for some reason lose all maneuvering capabilities. , what wet capability are looking to here is the im having a hard time saying this it is on a 24 hour safe free drift trajectory. If we were to completely lose Commanding Authority over the spacecraft, we want to make sure we would not potentially interact with the iss in an uncontrolled way. The burns help us get away from the space station in a way that we could if someone were to go if something were to go catastrophically wrong on the spacecraft the dragon spacecraft has been rocksolid this whole mission and has a lot of redundancy. That scenario is unlikely but it is a good safety standard. Leah departure burn zero and one are bringing dragon up and over the iss, not just making a straight journey home. That will be determined later once the burn is complete and to deorbit burn commits us leaving space and bringing bob and doug asked to earth. Cabin mic. K with i hear you loud and clear. Loud and clear. Leah as we heard, they are testing the cabin mic, so they may be taking off their suits, which is allowed now that the first two departure burns have been completed, the next is scheduled for 5 27 p. M. Pacific time, that will be departure burn two. It is really the middle of the night for the space station crew right now, nobody getting ready everybody getting ready to go to sleep soon, but our astronauts will be awake a while. Siva they got a chance to take a nap to be awake and alert for these operations. As you mentioned, the crew are in the middle of getting out of their suits. That was a dynamic period of time around the station, a time where there could have been to pressurization or if there was a problem, we wanted them suited. Now with the dragon on a confirmed trajectory away from outspace station on its way of the approach ellipsoid, they can get into something more comfortable. The test step of verifying the cabin microphone, the spacesuits have microphones in them near the jaw in the base of the helmet. Removing thedoug spacesuits, they are testing the cabin mic to make sure they have Good Communications with operations here in hawthorne. We should expect a few more calls here as dragon moves away from the approach ellipsoid. We heard some calls from capcom as well about the big loop as well and transitioning dragon to the ground. The big loop is a com network that controls Flight Controllers in Mission Control in houston and the iss crew, visiting vehicles, and of course, our Mission Control in hawthorne, altogether on one loop so we can communicate with one another if anything needs immediate attention. As we step out of the integrated operations or joint operations with the International Space station, we will transition into Mission Control here in hawthorne having Mission Authority and transition all of those calls to the dragon to ground loop. Leah life on the space station is kind of back to normal now that dragon has departed. They are still monitoring the departure. The crew on board crew dragon specifically. I imagine the astronauts on board the space station might be getting a final view of dragon before it returns to earth. Window tohe cuppola have on the space station. As we mentioned, dragon is outside the keep out sphere and a little more than 500 meters away from the iss. We will be looking for it to exit the approach ellipsoid in about six minutes. Siva right now, dragon moving away just under one meter per second, close to three feet per second, away from the space station, as it starts to get further and further away. The speed will pick up a little orbittil we get into an where eventually we have our highest point of orbit be about 10 kilometers below the space station. The approacher ellipsoid exit, we will have three more burns schedule today, two more departure burns as well as a departure phasing burn. That should button up the activities. These are the activities for today and bob and doug should hopefully be able to get some rest before an exciting day tomorrow. Leah i imagine they are very exciting. Tomorrow, they wake up and several more milestones to look forward to, including the deorbit burn, the commitment to bringing them home. If there were a change in the weather over the next several hours, he would still see bob and doug in earths orbit and they have enough crew supplies on board they could stay there a couple of days. That way we would have an opportunity for the weather to clear or to find another splashdown site. Everything is looking good for us to come home to pensacola tomorrow. Right now on your screen, views of Mission Control. On the righthand side, that is Mission Control in houston, on the lefthand side is Mission Control in hawthorne. Currently still in joint operations. As we transition out of the approach ellipsoid, we will Transition Mission authority to the Mission Director in hawthorne. Had integrated operations and been attached to the space station, any command and operations we wanted to do on the dragon spacecraft, we are getting permission from the flight director in houston to connect those commands. The Flight Control team in houston is really responsible for the health and safety of the crew aboard the iss as well as the safety and performance of the International Space station. It is wild to think about, sometimes i think about the iss as a destination but it is really a spaceship. , about two weeks ago, it wed completely around and was flying backwards, so to speak. It is the spacecraft just like dragon, but bigger. Leah it is an orbiting laboratory. We talked about some of the science bob and doug conducted. While they were there, they completed 100 14 hours approximately of Scientific Research aboard the International Space station. It is amazing how much of that benefits life on earth. The space station is in microgravity, which gives us an opportunity to test things and look closely at phenomenon cannot do on earth. The iss has provided countless medical advances and technological advances over the past 20 years. This is the 20th anniversary of the International Space station this year, so it is a big milestone. We will be celebrating that they are in november, and that means there have been People Living in space continuously for 20 years. Quite a feat. I love that it is international and this is such a good example of how when we work together, we accomplish something that at one time no one could have dreamed of. Siva reading some of the books by former crewmembers, they like to talk about the food aboard the space station, the International Cultural events they do between the crews, and they consider themselves a big family. Those kind words we heard between bob, doug and the station crew shows how close they became over a short time. Just a couple of months. I am sure they all knew each other well from training in houston. Leah something about being there with a common goal and those are your family while you are there. Opportunityet the to speak with family pretty regularly because we dont want them to get too homesick. They get a pretty good view in exchange. Yes, we are coming up shortly looks like a minute until we exit the approach ellipsoid, and end joint operations between Mission Control houston and Mission Control hawthorne, just behind us. Ellipsoid,pproach and imaginary lips around the elipse around the space station. Its really a marker as craft closes in on the iss. They need to coordinate through Johnson Space center in houston. Theour screen, short of Mission Control centers, and also what we call flight rules. Controls will establish procedures, sometimes down to specific failures, if a specific engine fails or if an attitude was lost or even the state of a lifesupport system on the vehicle. Goey come up with go no procedures that are analyzed. When it comes time to perform the operation, they check those lists against the health of the vehicle and they make those calls before performing operation and close proximity with one another. Leah the next call we expect to hear up to the crew is that they will have exited the approach ellipsoid. Everything occurring on time for dragon. And the International Space station currently flying over the indian ocean, 269 statute miles. About to come up on the Southern Coast of australia. Siva really the next major aroundor dragon will be 5 27 pacific time, tomorrow utc, the next27 departure burn. Before anyt of time significant milestones. Leah and we are outside of the approach ellipsoid. [no audio] now that we are outside of the approach ellipsoid, as you said, everything happening like clockwork today for departure. Loopagon spacex on the big , dragon has exited the approach ellipsoid and is on a safe free drift trajectory. Houston will take on the big loop shortly and expects audio traffic to cease. Dragon copies on the big loop. [no audio] with that exit of the approach ellipsoid or ae, that samenary ellipsoid, in the family as a keep out sphere, safe in aow 24 hours free drift trajectory so that if the spacecraft lost maneuver and capabilities, it would not cross into the ellipsoid. We heard the call from the ground up to the crew aboard close dragon crew dragon endeavor. Siva the crew acknowledging the call. They typically do some com checks when they transition out of the big loop. We heard those earlier while g,ey were doing suit doffin where they remove their suits and transition into something more comfortable, probably a polo and some pants. And really they will just be an monitoring mode until the next major event, which is the part burn number two, scheduled for about 30 minutes from now. Willdeparture burn two increase the rate away from the space station and start reducing the apogee and perigee of endeavors current orbit. Following that, and additional departure burn and a phasing burn. That is coming up later on in todays broadcast. The phasing burn is a much larger burn and these two departure burns come on the order of six minutes. Will beparture burn two the longest weve seen today, 43 seconds that will send dragon down, lower its perigee to below the station. It will move down and out front. Siva on your screen is sort of where we are conducting this burn. The part burn number two, at the orbitalperforming and burn or importing velocity to the spacecraft at the highest part of the orbit, that is the most efficient way to move to the opposite end of the orbit. Because we want to bring our lowest point of our orbit down further, we are trying to connect that at the apogee and get the most for the buck and the most mileage out of our propellant. Leah the part burn three will be a 41 second burn. Kind of like a coolympics burn and it will keep dragon always below the iss later tonight, we will look for a phasing burn, the longest one we have seen so far at over six minutes. It will put crew dragon on the proper orbital path to line up with the splashdown zone. Ourtually we will have deorbit burn in tomorrow and we will see the nosecone close and they will come on home, looking for down tomorrow in the gulf of mexico looking for a splashdown tomorrow in the gulf of mexico near pensacola, florida. Siva siva the departure burn expected around 10 48 pacific time. That will be around 5 00 in the morning gmt. Burnis the last major plant for tonight planend planned for tonight. Bob and doug will get eight tours of sleep and wake up get them started on preparation steps for final burn of the mission, which will be the orbit burn. Hopefully a successful reentry. Leah i dont know if you heard, when they arrived on the International Space station, Chris Cassidy asked bob behnken and doug hurley if the ride was smooth and they got any sleep. They said yes. Hopefully they get the same opportunity tonight for the splashdown tomorrow. Tomorrow they will arrive back in houston. They will fly back to ellington field. That is part of the Johnson Space center. They will have a welcome with then it wills and be three people on the International Space station until october. Siva that is a busy day for them. They will get up around i want to say 5 00 a. M. Pacific time. Splashdown time is around noon. If they are flying to their final site near ellington field, that is a pretty packed day considering they have been up that long. Leah it is one of the most dynamic days of the mission with the splashdown and being recovered in the ocean and getting to see your family after 63 days. It has to be pretty exciting. Siva we were talking earlier looks like no call that time. One thing we are expecting is the teams in Mission Control ulll be conducting a no go p to make sure the systems remain healthy. Before each of these burns, the engineer will give a call to the crew to let them know if the Mission Control team believes dragon is healthy for the burn. After those burns, we expect a call to provide a quick status update on whether the burn was nominal. Some things we are looking for our performance of the engine as well as the amount of impulse transmitted to the vehicle. The navigation officer paying close attention to the amount of momentum transferred to dragon as well as the current orbit as described by onboard navigation sensors. It is all part of responsibilities of the Mission Control team. That burn expected about 25 minutes from now. Time, or cific utc. Ic time, or 12 27 signale dont have a from dragon at this moment, but we are taking your questions. If you are on social media, specifically twitter, use the hashtag this one asks how much t will take for the dragon spacecraft to reach earth after undocking from the International Space station. Bob behnken and doug hurley have begun that journey and they are on their way, scheduled for splashdown tomorrow at 11 48 a. M. Pacific time. That would be 6 48 gmt. Dragon to ground. Friendly heads up that your audio destination is on iss, so if you are calling us, we will not hear you. Tomorrowt splashdown is looking like about a 19 hour mission for bob behnken and doug hurley from the time they dock until they splash down. Siva that time can be made shorter for this mission. We opted to give them a 19 hour opportunity. Spacex, say again for endeavor . Yes, just wanted to give you a heads up that your audio destination was on iss, but icu swapped that over to ground i see you swapped that over to ground. Thank you. I appreciate the heads up. Siva that fuzzy. Is fuzzy dot is a look at dragon currently on its way away from the International Space station. Leah speaking of the International Space station, another asknasa question. How do you keep time on the iss . You heard us working to convert that in our heads. The International Space station uses greenwich meantime. It is the in the middle space between russia and houston. Since those are two of the major partners in the International Space station operations, we use that time on board. Siva cool views aboard the cameras on the International Space station. Gmt is sometimes referred to as coordinatedersal time. Slightly different nomenclature. You might hear those calls. Leah it has been 30 minutes since the crew dragon departed from the International Space station. Separation coming up 11 30 p. M. Gmt. It has completed its departure burns, depart burn zero and depart burn one. The next will happen in about 22 minutes. We will look for depart burn two. Astronauts bob behnken and doug hurley are out of their spacesuits and wont need to put those back on until tomorrow just before the deorbit burn. Siva the question on social media right now, lines up well with the view we have of dragon. Why is dragon glowing right now . Actually dragon isnt glowing. What we are seeing is the reflection of the sun. Right now both dragon and the International Space station not in the earths shadow. Just from this view on the camera compared to Everything Else being so dark in the background of space, dragon is looking a little bit whitewashed from the exposure. So not glowing, but just seeing the reflection of the sun as we just the white balancing. White balancing. [no audio] siva dragon right now departing 4. 4 meters per second, about 3. 3 kilometers away from the space station. What we are seeing on the screen is the view from the International Space station. Me, aboutut excuse 3. 3 kilometers away from the space station. Question on what the main differences are between the draco thrusters and the other burners. What he is referring to is the super draco thrusters. Dragon has two different types of Propulsion Systems on the spacecraft. We have super thrusters that live in those pods on the sides of the capsule. They are only used for launch escape. They are pretty powerful clusters, that if we were to experience an anomaly in the dissent portion descent portion, we could accelerate away from the falcon 9 launch vehicle. Draco thrusters are much smaller thrusters. We have 16 of them around the vehicle. 12 of them around the Service Section of the vehicle that we have been using for these departure burns. We have a set of four of them that we refer to as the bulkhead thrusters around the hatch. The e a propellant as if you score them together, you get squirt them together, you get fire. Leah we have another question from a viewers fouryearold son. Can the astronauts feel how fast they are flying aboard the dragon . If not, why not . If you are sitting in a car, and lets say the car is going 60 miles per hour, you dont feel like you are going 60 miles an hour because you are part of that vehicle as it moves. Of course you would notice if it stopped, but as the astronauts are inside the International Space station and it is constantly moving at 17,500 miles an hour, they dont feel that speed. And when they are outside the space station, they dont feel that speed either because there is no wind to feel as it moves around the earth. Siva that is part of the fun of microgravity. Gravity is still acting on anyone who is in orbit, but it is a matter of you are in a state of freefall while your space ship is in freefall. You would only feel acceleration if you pushed against something or the spacecraft pushed against you. Bob and doug will feel a little bit of thrust in their seats, but not too much. About, ife a question the astronauts can get out of their seats during any part of the trip home. That is partially true. During this phase of the mission, the crew are free to roam about the cabin. During earlier portions of the nation, we had them be seated. E the mission, we had them b seated. Part of the reason for that is if there were depressurization, we need them to be seated so their suits can act as safety devices. When we get to the orbit, that is a dynamic time as well where they will be seated. Leah as for this moment now, they have the opportunity to be out of their seats, roam about the cabin, and out of their suits as well. They may have put on more comfy clothes for this relaxing uption of the ride, all until the orbit burned tomorrow burn tomorrow. If youre just joining us, dragon is on its way away from the International Space station. We separated from the space station around 4 30 p. M. Pacific time. Is that right . Leah separation was on time at 4 35 p. M. Pacific time. 11 35 p. M. Gmt. Siva we are awaiting departure burn number two. We have conducted two undocking bursts from those draco thrusters, as well as the first portrait burn departure burn. Departure burn two coming up. It will last 43 seconds. It will use a combination of the Service Section and draco bulkhead thrusters to reduce the lowest point of the orbit, the perigee of dragon, closer towards the earths atmosphere. Question fromt a a nineyearold who wants to know what the astronauts eat on the International Space station. We have a food lab at the Johnston Space Center in houston, texas. Astronauts have the opportunity to taste test some of their foods before they go on a mission. There are a variety of types of food available. A lot of it needs to be reheated with hot water. They can eat anything at holidays, they have the things we have here, Sweet Potatoes and turkey. They have candy like we have here on earth. They are not lacking on some of those sweet things. One thing they typically dont have our a lot of the fresh fruits and veggies that we get to enjoy. That can sometimes arise on a cargo dragon spaceship. It is hard to get that food up to them because it has to be fresh when it is packed. By the time it arrives, sometimes that can be several days. Ofnever they can do a load that cargo and get fresh fruits and veggies up to them, it is appreciated. Partground is go for the or depart burn two. For depart burn two. Siva confirmation from the core. Good read back from the dragon spacecraft. That vehicle is go for depart burn number two. That is expected in 12 minutes from now. What we expect to happen is dragon will adjust its orientation or attitude. There will be a few draco pulses to adjust the orientation of the spacecraft. We will use a combination of the forward bulkheads and Service Section dracos. The burn is expected to last 43 seconds. That little impulse, because of the orbital altitude, will lower the perigee to our desired target. The burn will get us into our desired orbit below the International Space station, 10 kilometers below the space station before performing the final phasing burn for the afternoon. Leah this is the third of those four departure burns. About 43 seconds. 1 14 a. M. N three at gmt. That would last around 42 seconds. That will be the next burn until we have the phasing burn later this evening. Then it will be time for bob behnken and doug hurley to get a little shut eye. Siva they will have a chance to have a meal aboard dragon. They have got plenty of food and water on board the spacecraft for the expected trip of this mission, which would have them landing tomorrow. They have meals ready to be on tord readt to ready eat on board the dragon. How many gs to the experience on entry . Gs referring to the Gravitational Force they will experience from the reentry forces. Took a look at the data earlier from the demo one mission. We are expecting the crew to experience somewhere around 4 to 5 gs during reentry. A lot of that will happen when the chutes deploy. On the way up, the experience on the order of 3 to 4 gs. Nothing too far out of family for the crewmembers. Leah this view of crew dragon is from the International Space station. These cameras can be controlled by Mission Control houston. Joint operations with Mission Control houston have ended now that crew dragon is outside of the approach ellipsoid. It is entirely under the supervision of Mission Control in hawthorne, however houston is still monitoring the status of the astronauts and the vehicle. These cameras can be controlled by teams on the ground. They help us to find what we are looking for whenever the astronauts are on a spacewalk or get a better view of an arriving or departing spacecraft, as we have today. Leah crew dragon looking pretty small compared to how we saw it just even 40 minutes ago. You can see the trunk near the top of your screen. Capsule down at the bottom. That is the only portion that will return tomorrow at splashdown. The trunk itself will be jettisoned and burn up upon reentry into the earths atmosphere. We have another question about if the dragon grew vehicle will be visible crew vehicle will be visible from earth. There were cool photographs when the iss passed in front of the sun. You could make out from those photographs, from a telescope, the silhouette of the dragon vehicle. If you had a telescope pointed in the right direction, you may be able to see it. Definitely not visible with the naked eye. Definitely need help from a telescope. Leah your telescope would need to be set perfectly, because crew dragon is moving very quickly. Right now it looks like crew dragon and the International Space station are flying 261 miles over the North Pacific ocean and moving at 17,500 miles an hour. So dont want to miss it. Ava we have a question from fiveyearold. Why does the rocket need a heatshield . Dragon does have rockets on board, although we refer to it as a spacecraft. Dragon has a heatshield on board for the intense heat upon reentry. Touse the atmospheric drag slow down the spacecraft. Hitse dragon spacecraft into that part of the earths atmosphere, it will compress the air and form a plasma at the base of the heatshield. That plasma is very hot. Leah they will reach at approximately 3500 degrees fahrenheit on the outside of the vehicle. That is probably not uncommon for bob behnken and doug hurley, considering they both live in houston. [laughter] they are used to hot temperatures. They will have air conditioning, as anyone who is in texas knows his necessity. Siva Ground Controllers here in hawthorne will do a check on the internal temperatures, potentially run some cooling. Before we get to that phase, we will detach the trunk. With that goes away our ability to radiate heat. We will do precooling during that toasty part of the mission. Leah the cool gloves here, you can see the dragon and the nosecone open. They will be using those forward bulkhead thrusters to make that burn. It will be the longest we see throughout the return home to slow crew dragon down enough to bring it into earths atmosphere. It will then close after that burn. It serves as some protection for the vehicle upon reentry. Siva it protects navigation sensors on the top of the vehicle. Use for relative navigation when we are in proximity to the station. All of those underneath there. Coming up in four minutes from now, we will get a brief glimpse at those four bulkhead dracos. They will be used for departure burn two, expected about 43 seconds to reduce the perigee, get that a little bit lower. Leah we will be looking for p. M. Pacific5 27 time or 12 27 a. M. Gmt. That is the time zone the astronauts have been used to living aboard the International Space station. Now that they have departed, they will begin shifting their time zone back to life on earth and back to that of houston texas, which is central time. Who another question about the core is and what their role is. The core is a position in hawthorne Mission Control, very atilar to the capcom role Johnson Space center. Really they are responsible for understanding all of the procedures the crew run, as well as looking out for the crew and providing them updates on the status of the vehicle. They synthesize information from the other Mission Controllers as well as think ahead to other things the crew will need to know to conduct their orbit. We heard a bunch of that earlier. Ole hascapcom side, r traditionally been an astronaut. Leah it was at one time solely astronauts who held that capsule communicator position. Hasdays it is someone who Extensive Knowledge of the vehicle or the task at hand. At one point it was always an astronaut, because they have experience in that vehicle. Now it can be any other very experienced individual. Heard youestion, i say there is no up or down in space. Can you explain . When you are in microgravity and you can orient yourself in every when you are on the International Space station, the floor could be where some of the research racks are located. You flip upside down to get better access to them. There is not necessarily an up or down because that gravitational pull is not as strong in microgravity. Direction really goes out the window on the International Space station. Siva we have frames of reference defined for the spacecraft. If you noticed when we were showing views of dragon attached to the space station, the nosecone was up, so to speak. The guidance officer and team here are understanding the orientation of the vehicle, but up or down is sort of a relative sensation. We are a minute and a half away from departure burn two. This will lower dragons perigee, or the lowest point of its orbit, to below the space station. It will be bringing it back down in front of the space stations orbit. It will be a 43 second burn. We will be looking for that in just about a minute now. Siva dragon right now is about 10 kilometers away from the space station. Retreating at a rate of 6. 3 meters per second. Leah if you have ever run a 10k, that is how far dragon is from the International Space station. They left at 11 35 p. M. Gmt, so under an hour for their 10k so far. [no audio] depart burn two in just a. Ew seconds begun. Burn has we will be looking at i43 second burn using a combination of Service Section thrusters and thrusters on the forward bulkhead, which is that area that the nosecone would be covering when it is closed. [no audio] burn complete. Nominal burn. Dragon copies. Nominal burn. Siva there is confirmation from the core of a nominal burn, that vern happening just off the west coast burn happening just off the west coast of the united states. Leah the next burn will be depart burn three. That will occur at 6 14 p. M. Pacific, 1 14 a. M. Gmt. That will be the last of those four depart burns. Siva in between them bob and doug, will get a chance for a meal. They have an hour before they go to sleep to get some time to collect themselves, do whatever presleep activities they need to do. On the space station, that is some time for them to hang out, take photos, maybe talk to folks on social media. Leah they love to talk to their families as well. They are able to videoconference with their families every so often. It is important to us that we keep the astronauts connected with their families. It is important for mental health. We have seen this on earth going through the coronavirus pandemic, people being a part from each other. Apart from each other. That is something the astronauts have been doing for a long time in dealing with isolation. We have teams on the ground that research how they are able to deal with that. Looking at when we go out on these missions to the moon and eventually mars, that the astronauts will be gone for extremely long periods of time, how do we give them the opportunity to feel at home, to feel connection with people back here on earth . Siva an interest in problem when you consider mars, the light and signal delay can create anywhere from a 25 minute to 45 minute delay, which is why it is more impressive about perseverance and the other mars rovers that have to do everything autonomously. There is really no time for an operator to issue a command and see if it worked. That adds an interesting aspect to contacting with your families. To connecting with your families. That is a long time to wait for a reply. Leah a lot of research we are doing on the space station is in preparation for that. We are looking to go back to the moon in the first time in a most 50 years. That is scheduled to be 2024. A lot of the research we are doing on the International Space station is paving the way for how we are going to establish a more permanent human presence on the lunar surface. Siva next expected departure burn number three expected at 6 14 p. M. Pacific time, about 1 14 a. M. Utc or greenwich mean time. Again, as mentioned previously, 41. 8 second burn that will use a similar combination of forward draco bulkhead thrusters. Those forward bulkhead dracos providing the majority of the impulse for that burn to finalize us in an orbit that is coelliptic with the station, the highest point being 10 kilometers below the Current Space station altitude. Leah speaking of those forward bulkhead thrusters, we have another asknasa question. If you are watching on social media or twitter, use the hashtag asknasa. Send us your question. Gary wants to know why the nosecone cant be closed now. It is because we are not done using it yet. That will be closed until tomorrow after the deorbit burn. We have seen those first three burns accomplished. Looking for departure burn three next. They will once again use those forward bulkhead thrusters located under the nosecone. Dont want to cover those yet, but it will be closed prior to reentry. Siva there are a number of navigation sensors beneath the nosecone that help dragon know where it is pointing in space and help communicate with tracking satellites. Not only is it for those burns, but also to help dragon know where is it around planet earth. Weve got a question, how can kids work toward being future astronauts or work with nasa . Great question. I will give some advice that the astronauts give. They say to pick something that you love to do. The task of being an astronaut is difficult. It requires a lot of studying and learning and growing in your field. That is much easier to do if you enjoy what you are doing. Typically we would encourage you to pick something in the science, technology, engineering or math field and pursue a career there. We have astronaut applications open every few years or so. We pick around a dozen astronauts to go through two years of training that will set mission. Or a future nasa has a lot of different career opportunities. I work in communications. Nasa needs people to help tell the story. M. Is not your thing, you can still be part of the nasa family. Siva the best piece of advice i have heard is to stay curious. If there is something that sounds interesting to you, dont take someone elses word for it, do your own research. He will probably become the person who knows more than you will probably become the person who knows more than anyone else about it. This is an interesting question, and i am not sure i know the answer. What does space smell like . [laughter] leah i personally havent been, so i havent had the opportunity to try it. A few Different Things from the astronauts. One said it smells like burnt cookies or burnt steak. The common theme is it smells something burned. Butragon spacex, no rush please let us know when it is ok to come back on board with video. Siva the core there just relay into the group. We have cameras aboard dragon. Crew thatto the they can doff their suits. We wrapped up our time for suit drying. Copy all. Thank you so much. Siva doug there referring to the drying time for the suits. Any perspiration, any wetness in the suits from having people in them, we want to make sure the suits are nice and clean. Dont want any possibility of getting gross or building up any microbes. When we first got to station, we did a longer dying period. The crew wiped it down with cleaning wipes. A similar operation right now. Leah another walkthrough of everything that happened today if you are joining us now. We joined the International Space station while the astronauts were still on board with their other three counterparts. Crew board the crew dragon, say farewell, put their suits on and closed that hatch of crew dragon, followed up by nasa astronaut Chris Cassidy closing the hatch on the International Space station side. We stepped into the vestibule depressurization. An ontime departure separation occurring at 4 35 p. M. Pacific time. P. M. Gmt. 30 we had those two short bursts using the thrusters on dragon and the umbilical detention, the 12 hooks releasing dragon from its home from the past couple months. After that, we saw the first three departure burns of crew dragon. The first two bringing it up and over the International Space station. The astronauts were able to take off their spacesuits after the burn was completed. We just saw departure burn two, which has lowered dragons perigee below the International Space station at all times. Next up for us will be departure burn three. P. M. Ng for that at 6 14 pacific. Siva a pretty busy day for bob and doug aboard dragon. There is a view of inside the cabin. Bob and doug out of their spacesuits. You can see one of their spacesuits. It is that white and gray item on the lefthand side of the screen. Looks like that might be bob on the righthand side. You can see the cargo. Looks like theyve got a spacesuit in the way of this camera, but beneath the seats theyve got some storage room where weve got 150 kilograms of cargo. More than half of that is scientific experiments and samples coming from the Research Program aboard the International Space station, which is a national laboratory. You had a number earlier. Bob and doug combined leah approximately 114 hours of science while on the International Space station. That doesnt count toward the upgrades completed outside with battery changes that enable us to keep going further. It has tripled the amount of time we were able to do, because that is the u. S. Lab. Chris cassidy was, prior to the arrival of crew dragon, doing all this work on his own. Having bob behnken and doug hurley come on board for a few months expanded the Scientific Research during that time. Siva cool views of the interior of the cabin. Right now we are looking at a camera that would sit ordinarily behind the crewmembers, looking up at their displays. The view we had previous to this was a view looking toward doug hurleys feet. On the uphill portion of the mission, we got a quick tour of the interior of dragon from bob and doug. They gave us a quick tour of the cabin. Looks like bob just putting his suit away. Suit drying complete. They were wearing those suits earlier. Just for their protection, if there was depressurization or a fire in the spacecraft. Of one of those events is pretty low. The suit and storage bags will be kept in close proximity, so if there were any anomaly later on in the mission, bob and doug could get into them quickly. They are pretty much a single piece design. They can be put on in less than 15 minutes. Leah you made a good call. It looked like a polo and khakis to me. They are able to relax before the deorbit burn tomorrow. Siva probably a lot of velcro on those as well. Leah it is interesting, the astronauts use velcro on their pant legs and anything that they work with, their spoon or drink bags might have velcro on either side, so if they need to put it down, they dont want it to float away and become lost in the recesses of the vastness of the International Space station. So they can just tack it to th eir velcro spot on their pants leg. Siva you might wonder how something would flow away. One, it is hard to impart something with no force. If you have watched videos of crewmembers on the space station playing with their food, it may start to twist and turn and they grab it and it will start to twist and move. There is a life support reason for doing that as well. As the crewmembers are exhaling Carbon Dioxide, unless you have really good circulation in the life support system from all of the fans and scrubbers on board, that Carbon Dioxide will tend to create pockets of unreadable air. The life support system is providing a lot of positive pressure and moving gases around the cabin to make sure we are revitalizing that air, of course regular injections of oxygen so it is nice and breathable. Our coverage of the return of the spacex crew dragon from the International Space station continues sunday, starting at 10 00 a. M. Eastern. We will have live coverage of the final preparations before the spacecraft begins its trip back to earth. Weather permitting, the vessel is scheduled to splash down off the coast of florida at 2 42 p. M. Eastern with a News Conference to follow at approximately 5 00 p. M. Eastern. That is live sunday on cspan. The basics crew dragon capsule spacex crew dragon capsule encounter with astronauts bob behnken and doug hurley is scheduled to splash down in the gulf of mexico near florida. Earlier the crew held a brief farewell ceremony before undocking from the International Space station. Here is that ceremony, followed by the undocking, courtesy of nasa tv. Station, this is houston. Are you ready for the event . This is the International Space station. We are ready for the event. Copy that. We are ready to send over to you. Aboard to the International Space station and the crew of expedition 63