i think that's going to be such a huge deal, we've never deliberately gotten rocks back from mars. If they could tell us anything, if there was life there, i think that'd be like, as morgan said, like civilization defining science. All of life that we know of on earth is all related. You and i are related to each other.
Mars was once a very different planet, with rivers, lakes, and — potentially — life. NASA’s latest Mars rover is on a mission to find traces of past life. What happens if it does?
This is the third episode of our new four-part series, Lost Worlds.
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