Scientists from various international space agencies have successfully determined the cause of the largest seismic event ever recorded on Mars, known as a Marsquake. The quake, named S1222a, occurred on May 4, 2022, and was observed by NASA’s InSight Mars lander. After ruling out a meteor impact, the team concluded that the quake was caused by a release of stress within Mars’ crust. The event was five times stronger than any previously observed by InSight.
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