Mars orbiter captures scar on Red Planet longer than Grand Canyon (Image)

New images published by European Space Agency A 600-kilometer-long (373-mile-long) spiral scar on the surface of Mars has been captured in greater detail than ever before. The Red Planet is riddled with scratches and scars, and this one, named Aganippe Fossa, is one of many steep-walled trench-like depressions — though, more specifically, Aganippe Fossa is called a “graben.”

“We are still unsure how and when Aganippe Fossa formed, but it seems likely that it was formed by magma rising beneath the huge Tharsis volcanic mass, causing the Martian crust to stretch and crack,” ESA officials wrote in a report. Recent Press Releases,

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