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The Stickney Crater is the most prominent surface feature on Phobos, moon of Mars. Over 9 kilometers across, Stickney is nearly half the diameter of Phobos itself, so large that the impact that blasted out the crater likely came close to shattering the tiny moon.

Stickney was named after the maiden name of a certain ancient human astronomer's wife.

Even though the surface gravity of asteroid-like Phobos is minimal, streaks suggest loose material has slid down inside the crater walls over time. Light bluish regions near the crater's rim could indicate a relatively freshly exposed surface. The origin of the curious grooves along the surface is mysterious but may be related to the crater-forming impact.