mission is going to look like. well, this is a test flight. we stress it, we test it, we would do things to this particular mission that we wouldn t do with a crew. the number one objective is we want to know that that heat shield is going to work on the fiery heat of re-entry. it is coming in hot, it is coming in fast, 32 times the speed of sound, mach 32, 5,000 degrees fahrenheit. we have to know that that heat shield works. yeah. that s the primary objective. we re doing 42 days. the part of the spacecraft s only rated to 21 days. so you see how we are stressing it in order to push the limit to make sure it is safe when in two years we will have a human crew and we ll go back to the moon.
it carries a mannequin that can collect data on what a human crew might experience. and two other phantoms will be aboard made of material that mimics the soft tissue of organs and bones of a woman. this time the mission is unmanned but the launch of the most powerful rocket ever built kicks off a more ambitious plan. this is the start of nasa s artemis program which aims to land the first woman and first person of color on the lunar surface by 2025. eventually build a lunar base and make way for further exploration to mars and maybe even beyond. christina macfarlane, cnn. i m kim brunhuber. i ll be back with more cnn newsroom in just a moment. please do stay with us.
important to have redundancies when it comes to space travel. you never want to have your eggs all in one basket, jim. as they always say, space is hard. rachel crane, thanks so much. joining me now to discuss, someone who knows better than anyone perhaps, nasa administrator bill nelson joining us from nasa headquarters here in washington. good to have you, sir. thanks, jim. rachel did a great job, by the way, summarizing everything. thank you. let me ask if you have an update. do you believe this will in any way, the thruster dish it is still on its way to the iss. but does the thruster issue give you concern that the current timeline will not be met? that s why we have a test flight before we put a human crew on board. and in this case, two of 12 had
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thauj for joining us live from west texas. so far a nominal flight for the second human crew so exciting. two have sent captain kirk himself william shatner to space. i can t wait to hear his commentary upon return the others. a big shoutout to those tuning in from down under. they are coming back home. the booster, of course, is going to beat the capsule back home. it is more aero dynamically spaced. what we re going to see coming up shortly is at the top of the rocket we have the ring fin, the there s some what we call the pie fins that extend from the ring fin as well as the drag brakes, the pie fins, the wedge fins helps stabilize the vehicle