View Full Version : Are Gas-Formed Gullies the Norm on Mars?

2011-Dec-05, 08:40 PM
In June 2000, Martian imaging scientists made a striking discovery — data from NASA’s Mars Global Surveyor spacecraft found gullies on the red planet. Gullies on Earth form when water runs down steep slopes and carves soil out of its way, so the discovery of this geologic feature on Mars was enticing evidence that liquid [...]

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