Martian gullies likely contain 'no water': study

December 21, 2015 23:16

Months after scientists announced "the strongest evidence yet" of liquid water on Mars, a study today said there was none at least in the valleys carved into numerous Red Planet slopes.

Rather than water flows like those on Earth, these Martian gullies were likely created by dry ice defrosting, a duo of French scientists wrote in the journal Nature Geoscience.

"The role of liquid water in gully formation should... be reconsidered, raising the question of the importance of its occurrence in Mars' recent past," wrote Francois Forget and Cedric Pilorget of the French national research institute CNRS.

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