APOD from 2025-04-06
Moonquakes Surprisingly Common
Apollo seismometer data from 1972-77 detected 62 moonquakes near the surface, some strong enough to shift furniture. Unlike #Earth's quakes, the #moon's stiff rock vibrates longer. Causes may include Earth's tidal gravity and heat. Future #lunar homes must be quake-resistant. Buzz Aldrin is shown with a seismometer in an image.
HD image at https://apod.nasa.gov/apod/ap250406.html#space #astronomy #universe