A Quake means shaking the surface of any planet, moon, or star. A Quake is the result of a sudden release of energy transmitted as seismic waves and with great violence.
A Moonquakes is the quake of the Moon, which was first discovered by the Apollo Astronauts.
Between 1969 and 1972, Apollo Astronauts placed seismometers at their landing sites around the Moon. The Apollo 12,14,15 and 16 instruments faithfully radioed data back to Earth until they were switched off in 1977.
The Apollo Seismic network saw 28 of them, a few registered up to 5.5 on the Richer Scale.
