When meteorites impact the Moon, seismometers show vibrations lasting unusually long. The solid, dry crust and lack of atmosphere allow energy to propagate far. Apollo seismic experiments revealed reverberations for over an hour. It’s eerie and unlike anything on Earth. The Moon’s “bell-like” behavior comes from its rigid structure. This teaches about internal composition. Moonquakes and impacts both cause ringing.
It matters for understanding surface and subsurface integrity. Engineers must consider vibrations when building sensitive equipment. Long-lasting tremors influence structural design.
It also gives clues about seismic energy dissipation. The Moon’s interior is less damped than Earth’s. It’s a natural lab.
Laser experiments confirmed vibrations could last up to an hour.
NASA [nasa.gov]