"Slam Dunk" Sign of Past Water on Mars‏

[Dingo]

NASA Science News for Dec. 8, 2011

As NASA's newest Mars rover Curiosity heads for the Red Planet, veteran rover Opportunity continues to make discoveries. Opportunity's latest find, an apparent vein of the mineral gypsum, is a "slam dunk" sign of past water on Mars, say researchers.

FULL STORY at http://science.nasa.gov/science-news/science-at-nasa/2011/08dec_slamdunk/