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NASA and Matt Damon Told Us Why The Martian Is "a Love Letter to Science"

Right now, here’s how close we are to the events of Andy Weir’s novel The Martian actually happening: Not very. NASA believes we’re probably about 20 years away from putting an astronaut on Mars, but as the movie about a astronaut being stranded on Mars hits theaters, 20 years feels longer than it sounds. »8/20/15 4:24pm8/20/15 4:24pm