NASA's Curiosity rover has discovered that Mars was once habitable.
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weather.com:
NASA's Curiosity rover has discovered that Mars was once habitable.
Read the whole story at weather.com
Is sending humans to Mars actually feasible?
Mars mission not for pride, we mean business, says ISRO
Mars's Atmosphere Is Thin, Curiosity Rover Reports, But Not, Like, That Thin
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weather.com | Posted: 07/21/2013 9:42 am EDT