InSight Felt the Ground Shake From a Meteorite Impact on Mars - by spacewriter
“It’s unprecedented to find a fresh impact of this size,” said Ingrid Daubar of Brown University, who leads InSight’s Impact Science Working Group. “It’s an exciting moment in geologic history, and we got to witness it.”
The crater was first spotted on Feb. 11, 2022, by scientists working at Malin Space Science Systems , which built and operates two cameras aboard MRO. The blast zone was visible in data from the MRO. The spacecraft team then correlated with the InSight data taken at the time of the impact. That allowed them to figure out the epicenter of the impact and start the search for the crash site.
Aside from aging, craters also provide an important look inside the crust of the planet. Every time an object gouges out a crater, it reveals materials beneath the surface. On Mars, that turns out to be ice, and the December 24 impactor dug out huge blocks of ice. Mars has a lot of permafrost beneath the surface, so in a sense, the impactor acted as a geological “pick”. The region where this meteoroid created the crater is fairly close to the Martian equator, so finding ice there is important.
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