Marsquakes, recent volcanism suggest Mars still has a mantle plume
The Mars InSight lander included the first seismograph placed on the red planet, and it has picked up everything from marsquakes to impacts and provided lots of new information on Mars' interior. But perhaps its most striking finding has been that almost all of Mars' seismic activity appears to originate from a single location, a site called Elysium Planitia.
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