past lives. what is the key to the end of this mission to getting some of those answers? >> this is a very exciting mission, of course. we have had indications over the last few years. even in our own cosmic backyard and own solar system and some of the strongest ones from mars finding trapped methane in the rock from billions of years ago to the most recent discovery of the fluctuating oxygen levels and that is right around the area where they plan to put this new rover in 2020. it has a pretty good chance, i think, of finding either past or possibly even some kind of present microbial life on mars and i think the impacts of that are going to be huge. >> i want to ask you about spacex mars prototype. had a little problem departing from ground. is spacex you think capable of developing this equipment that can accomplish its goals? >> oh, i would expect, as in any