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Plum Crater

An Apollo 16 astronaut stands near the rim of Plum Crater (40 meters, or approximately 44 yards, in diameter) on the moon. Although Earth has experienced many meteorite impacts throughout its history, the action of wind and water quickly erases the resulting craters. Because these forces don't exist on the moon, the only way evidence of impact craters can be removed is by being destroyed by later impacts. However, this is not a very efficient process so craters last a long time on the moon's surface.

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