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Surprise Clues to Mars’ Watery Past


Waspie_Dwarf

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NASA’s Curiosity Finds Surprise Clues to Mars’ Watery Past

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Among other discoveries made by the rover, rippled rock textures suggest lakes existed in a region of ancient Mars that scientists expected to be drier.

When NASA’s Curiosity rover arrived at the “sulfate-bearing unit” last fall, scientists thought they’d seen the last evidence that lakes once covered this region of Mars. That’s because the rock layers here formed in drier settings than regions explored earlier in the mission. The area’s sulfates – salty minerals – are thought to have been left behind when water was drying to a trickle.

Read More: NASA JPL

 

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