The Moon Is Shrinking: What 10,000 Lunar Faults Reveal

Scientists have mapped more than 10,000 young tectonic landforms on the Moon, revealing how its interior cooling has caused the lunar radius to shrink by about 45 meters over the past 400–800 million years.

Unlike Earth, the Moon has a single outer shell, spreading contraction faults across its surface. These findings offer new clues about ongoing lunar activity, including the potential for moonquakes.

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