Lunar Reconnaissance Orbiter Camera

Random Scarps Reveal the Moon is Shrinking

Description:

Thousands of small lobate fault scarps are found just about everywhere in the lunar highlands, and are formed when contractional forces break the crust and thrust blocks upward. Here a lobate scarp cuts across and deforms a large impact crater (about 5 km in diameter). The vast, global array of such young fault scarps is evidence that the Moon is shrinking as it liquid core freezes to a solid and the interior cools thus taking up less space. These faults are not ancient, they are very young – so young the Moon is likely slowly shrinking today.

Lat: 74.506°
Long: 147.043°
Camera: NAC
Image Width: 4.3 km
Location in exhibit: Major Discoveries
Image ID: M156626383LR

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