Is the Moon Shrinking?

💡 The Answer

• The Moon has decreased in radius by about 50 meters over the last several hundred million years.
• As the Moon's interior cools, it contracts, causing its surface to wrinkle and crack.
• This ongoing geological process results in seismic activity known to scientists as moonquakes.
• While the shrinkage is very slight, it provides valuable data about the Moon's changing structure.