Mars might be, geologically speaking, not quite dead. Researchers have analyzed a slew of recent temblors on the Red Planet and shown that these Marsquakes are probably caused by magma moving deep under the Martian surface . That’s evidence that Mars is still volcanically active, the researchers report October 27 in Nature Astronomy . Since touching down on Mars four years ago , NASA’s InSight lander has detected more than 1,000 Marsquakes ( SN: 11/26/18 ). Its seismometer records seismic waves, which reveal information about a temblor’s size and location. Previous studies have determined that several Marsquakes originated from a swath of Martian terrain known as Cerberus Fossae ( SN: 5/13/22 ). This region, which is particularly riddled with faults, is more than 1,000 kilometers from the InSight lander. But most of the Marsquakes linked to Cerberus Fossae so far have been pretty familiar, scientifically speaking, says Anna Mittelholz, a planetary scientist at Harvard University.

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