Late on the Earth night of May 4, or Sol 1222 on Mars, the seismometer aboard NASA's InSight Mars Lander detected a quake on the Red Planet, with reverberations lasting many hours. The marsquake was at least five times as large as the next largest quake recorded on the planet, according to new research published Wednesday in Geophysical Research Letters. Additional research related to the record marsquake is also being presented this week at AGU's Fall Meeting, in Chicago from 12 to 16 December and online everywhere.
