Humans on Mars Soonish Says NASA Bigwig

Update: 2014-12-10

Description

John Grunsfeld, the former astronaut who now heads NASA’s Science Mission Directorate, thinks that traveling light could get people to Mars by the 2040s

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Humans on Mars Soonish Says NASA Bigwig

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Humans on Mars Soonish Says NASA Bigwig

Scientific American

Humans on Mars Soonish Says NASA Bigwig