Humans on Mars by 2035? NASA’s sci-fi dream could be reality

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Story highlights

NASA chief scientist, Ellen Stofan, wants humans on Mars by mid-2030s

Astronauts would take 8 months to reach planet, face radiation, thin atmosphere

Studying Mars would help us better understand Earth

Believes there must be intelligent life in our universe

CNN  — 

We’ve just landed a dishwasher-sized robot on a comet and NASA’s chief scientist has no idea.