New submitter horselight writes "Recent data obtained from Mars indicates the environment is not as hostile to life as once thought. 'An examination of data gathered by NASA's Mars Exploration Rover Opportunity reveals deposits that, on Earth, are only created by water moving through the rock.' The study's lead author, Steve Squyres, said, 'From landing until just before reaching the Endeavour rim, Opportunity was driving over sandstone made of sulfate grains that had been deposited by water and later blown around by the wind. These gypsum veins tell us about water that flowed through the rocks at this exact spot. It's the strongest evidence for water that we've ever seen with Opportunity.' Gypsum veins and other features indicating water movement on the surface of Mars have been observed to be much more common than previously thought."
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