How NASA's next Mars rover will hunt for signs of past life

January 5, 2015 4:02 PM

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How NASA's next Mars rover will hunt for signs of past life

How habitable was Mars in the past? Since NASA's Curiosity rover touched down on Mars in August 2012, it has helped answer a few of these questions in the area surrounding its equatorial landing site of Gale Crater.

Most notably, in March 2013, Curiosity investigators announced extensive evidence of a lake bed or river system in a region that NASA dubs "Yellowknife Bay." The environment, which could be a favorable spot for microbes, includes minerals such as clays that are formed in waters that once existed the...

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