can you see it from time to time with the naked eye. let's brings them. in we have nsa commander randy bresnick and flight engineers joe akaba and mark from the international space station. a word of caution from home there is a six second delay between the time we finish a question and the time they answer. so it's going to be a little awkward but the price of talking to space. commander, let's start with you, tell us about the mission. what is the mission for your crew on the international space station right now? >> we're up here on board the international space station with agencies from russia, japan, canada, and european spaces agency. we are up here doing science on a place we cannot do on earth. microgravity. we are doing science experiments on fluids, combustion, we are growing plants. finding cures for diseases and finding vaccines. we are doing a lot of stuff every day and continuously