Moon quakes detected during the Apollo missions reveal the Moon is probably still tectonically active. A new analysis found 8 quakes originated within 20 miles of fault scarps, where the Moon’s surface is shearing against itself thanks to long-term shrinkage.

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Moon quakes detected during the Apollo missions reveal the Moon is probably still tectonically active. A new analysis found 8 quakes originated within 20 miles of fault scarps, where the Moon’s surface is shearing against itself thanks to long-term shrinkage.