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/Jet Propulsion Laboratory
A false-color panorama taken by Opportunity on its 12-km trek to Endeavor crater.
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