supposed to launch in 2022. their mission is to build the first human settlement on martian soil. the biggest hitch? once they blast off from earth, there is no turning back. we have the cofounder and ceo of mars one. he joins us now on the telephone. so the idea is these four earth links launch to marchs but they don't come back, is that right? >> that's right. you have all the technology here on earth to send humans to mars, to land them safely, to support their life there. to keep them alive, but there is simply not the technology to let humans take off from mars and get them back to earth. the technical ability is not there. jon: they land an mars. they spend the rest of their life in the space colony. it sounds pretty frightening frankly. >> actually we keep sending more people every two years. there will be a growing