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Bizarre sand dunes on Mars are ‘almost perfectly circular,’ and scientists don’t know why
Bizarre sand dunes on Mars are 'almost perfectly circular,' and scientists don't know why,A high-resolution camera mounted on NASA's Mars Reconnaissance Orbiter has snapped pictures of unusual, almost perfectly circular sand dunes on the Red Planet's surface.

Bizarre sand dunes on Mars are ‘almost perfectly circular,’ and scientists don’t know why

A high-resolution camera mounted on NASA’s Mars Reconnaissance Orbiter has snapped pictures of unusual, almost perfectly circular sand dunes on the Red Planet’s surface.,A high-resolution camera mounted on NASA’s Mars Reconnaissance Orbiter has snapped pictures of unusual, almost perfectly circular sand dunes on the Red Planet’s surface.,A high-resolution camera mounted on NASA’s Mars Reconnaissance Orbiter has snapped pictures of unusual, almost perfectly circular sand dunes on the Red Planet’s surface.