The Moon is getting smaller and is prone to moonquakes, according to new Nasa research. Over the last several hundred million years, Nasa scientists have found the moon has reduced its size by 50 metres due to a cooling interior, and it is still tectonically active. The moonquakes recorded aren't minor, they are "fairly strong, around five on the Richter scale". As a result, researchers were able to "tentatively attribute" the recorded quakes to the faults. Additionally, six of the eight moonquakes recorded near the faults occurred when the Moon was at its farthest point from Earth in its orbit - its apogee.

Source: Stuff May 13, 2019 21:00 UTC