More evidence of (long ago) water on Mars:
NASA's Phoenix spacecraft has discovered evidence of past water at its Martian landing site and spotted falling snow for the first time, scientists reported Monday. Soil experiments revealed the presence of two minerals known to be formed in liquid water. Scientists identified the minerals as calcium carbonate, found in limestone and chalk, and sheet silicate.
But exactly how that happened remains a mystery.
"It's really kind of all up in the air," said William Boynton, a mission scientist at the University of Arizona at Tucson.
Not that I'm packing my suitcase or anything, but let's hurry up and find some present day water.
UPDATE Snow nearly on Mars!
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