The image above is from the martian moon Phobos. It is the crater called Stickney Crater, and is a whole 9 kilometers across. That's half of the diameter of the moon, so the impact most likely came close to shattering the small moon. While the gravity of this moon is very low, it does slowly pull rocks, gravel, and other debris down. However, raw material from the inner moon is still visible. Named after Chloe Angeline Stickney Hall.
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