Mars rover Opportunity finds gypsum, a strong indicator of water

NASA has announced that its Mars rover, Opportunity, has found the most convincing evidence to date of traces of water on the Red Planet. Pictured above is a thumb-sized vein of what appears to be gypsum that was most likely left behind by a small stream. This evidence is being called a “slam-dunk” by geologists [...]

Source: http://www.geek.com/articles/geek-cetera/mars-rover-opportunity-finds-gypsum-a-strong-indicator-of-water-2011128/

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