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The Red Album

Mars’ foremost photographers pick their favorite images of their favorite planet.

Fossil Delta

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(NASA/ JPL /Malin Space Science Systems)

This MOC view of a long-dry, "fossil" delta in Eberswalde Crater was the smoking gun that established unequivocally the existence of persistent—as opposed to sporadic—water flow in the Martian past. The overlapping ridges and other evidence point to a complex history of deposition over time.

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