Enlarge / InSight captured seismic waves released when an impact formed this crater in 2021. But a similar event can’t be tied to any craters.
Earth has earthquakes. Mars has marsquakes. There is just one difference: marsquakes are most frequently caused by meteoroid crashes since the Red Planet lacks the tectonic plates that shift pieces of crust on Earth. So what caused the most intense marsquake ever when there has been no evidence of a collision?
Vibrations from the 4.7 magnitude quake sent tremors through the Martian crust for six hours (if not more) and were captured by NASA’s InSight
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