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The icy steps on these Mars plains may be ancient wind-blown dust


Strange icy ridges imaged by NASA’s Mars Reconnaissance Orbiter may show proof of dust, water or wind, depending on where you look. (Image credit: NASA/JPL-Caltech/UArizona)

This icy labyrinth looks like a piece of Martian cake.

The image of ice and dust layers on Mars from an orbiting NASA spacecraft may provide a window into the complex, water-filled history of the Red Planet, a new study suggests.





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