noun
- seismic vibrations or tremors that occur on the Moon’s surface
Usage: scientific; astronomy
Examples
- Scientists detected moonquakes using seismometers left by Apollo astronauts.
- The moonquakes were much weaker than typical earthquakes.
- Deep moonquakes occur about 700 kilometers below the lunar surface.
- Shallow moonquakes near the Moon’s surface can last for several minutes.
- Thermal moonquakes are caused by the extreme temperature changes on the Moon.
- The Apollo missions recorded thousands of moonquakes over several years.