The descending lander, which landed on Mars in November 2018, has recorded around 450 tremors since then, most moderate. The planet's seismic activity is greater than that of the moon, but less than the Earth's.
Mars' seismic activity is due to the planet's prolonged cooling since its hot liquid state 4.5 billion years ago. Because of him, it shrinks and fragile outer layers crack, explained mission principal investigator Bruce Banerdt of NASA's Jet Propulsion Laboratory.
The largest tremors on Mars have in the Cerberus Fossae area of the equator. The strongest recorded tremor was a magnitude below 4. Twenty are 3-4 magnitude.
The geological dynamics of Mars are different from Earth's. The outer shell of our planet is divided into huge plates that move on a rocky inner layer above the core. Mars doesn't have such plate tectonics.
There are tremors on Mars
NASA's InSit spacecraft confirmed Mars is seismically active, AP and Reuters reported.