if you can imagine having sensors on your body where you can pull the heart out virtually and spin it around and see what's happening, that's going to be incredible. how important will collaboration be between nasa and private companies in achieving a sustainable presence on mars? this is absolutely critical. there's no way that nasa can do this alone, and there's no way that all of the agencies, the international agencies that nasa partners with, there's no way that they could do it alone. you think about spacex, in the united states, space has gotten where it is in collaboration and partnership with nasa. nasa has invested quite a bit of money in spacex to help get where they are, and we are going to continue working with private industry companies like spacex and some of the new space companies that are coming out. does space have a role in helping us solve terrestrial issues? absolutely. the james webb space telescope — in order for those mirrors to give