New Mars clay study suggests planet was too dry, hot for life
A new study of magma-formed Martian clay by French and US scientists suggests that Mars possibly never had free-flowing water. The new study contradicts previous studies that suggested the early environment of Mars had water believed essential for life.
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Video: Watch NASA's Curiosity rover land on Mars
After NASA's Mars Curiosity rover landed on Monday, it has beamed back the first color images of its new environment with 297 thumbnails NASA has processed into a video of the rover's dive through the Martian atmosphere.
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