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Steve Squyres on Why Humans Should Go to Mars

The principal scientist in charge of Spirit and Opportunity explains how he fell in love with Mars and why humans need to go

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American astronomer and planetary scientist Steve Squyres, the principal scientist in charge of Mars exploration rovers Spirit and Opportunity, explains how he fell in love with Mars and why humans need to go there.

Photo: NASA, M.Wolff, J.Bell, S.Lee
NASA's Hubble Space Telescope captured these sharp views of Mars during the planet's close approach to Earth in 1999.
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