Martian Megaripples: Shifting sand dunes in slow migration spotted on Mars for the first time – Firstpost

Using images of sand dunes on Mars captured by NASA’s Mars Reconnaissance Orbiter, a group of planetary scientists have shown that some of these structures migrate.
Focussing on two regions on the Red Planet, right near the equator, they found that sprawling heaps of sand which they term as “megaripples” make stealthy movements from point to point of the Martian surface. Sometimes, these dunes move slow enough that it could easily escape one’s notice in visuals and maps.
The team poured throug…

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