How's the water on Mars? Curiosity rover finds out. (+video)

December 17, 2014 8:04 PM

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NASA's Curiosity Mars rover has detected water locked inside a rock, shedding light on what the Red Planet's surface water was like billions of years ago.

NASA's Curiosity rover is continuing to help scientists piece together the mystery of how Mars lost its surface water over the course of billions of years.

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