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Two rows of five squares, each showing a round depression in the center of a gray background. The depressions vary in sizes, and the backgrounds vary in shades of gray.

Lava tube pits

These images from NASA’s LRO spacecraft show a collection of pits detected on the Moon. Each image covers an area about 728 feet wide.

Image Credit: NASA/GSFC/Arizona State University
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Image CreditNASA/GSFC/Arizona State University
Size2244x894px