InSight Just Detected a Record-breaking Marsquake: Magnitude 5! - by spacewriter
On Mars, however, things are quite a bit different. For a long time, planetary scientists suspected that the Red Planet was geologically dead . Yet, the surface shows evidence of volcanism, as well as what’s called a hemispheric dichotomy, which simply means that the northern and southern hemispheres are very different from each other in terms of cratering and average altitudes. In addition, the crust varies in thickness between the two halves of the planet.
InSight’s domed Wind and Thermal Shield, which covers its seismometer, called Seismic Experiment for Interior Structure, orIt’s not clear why this dichotomy exists, and it’s even less clear about what’s happening inside Mars. It may have had some version of plate tectonics early in its history, although that’s still under debate. What isn’t so debatable is the existence of Marsquakes on the Red Planet. And, the detection and measurement of those quakes is why the InSight Lander was sent to Mars.
“Since we set our seismometer down in December 2018, we’ve been waiting for ‘the big one,’” said Bruce Banerdt, InSight’s principal investigator at NASA’s Jet Propulsion Laboratory. “This quake is sure to provide a view into the planet like no other. Scientists will be analyzing this data to learn new things about Mars for years to come.”This selfie from InSight shows how dusty its solar panels have become.
While scientists were taking in the latest Marsquake data and exploring what it might tell them, InSight lander gave them some unsettling news. It had been having problems with its solar panels, due to dust accumulation on the solar panels. This affects the power production needed to keep the instruments running. On May 7, 2022, the available power dropped so low that the system went into safe mode.
In the meantime, InSight scientists have a mound of Marsquake and other data to study. What they learn will help them understand more about the structure of the Red Planet, and the structures of other rocky worlds in the solar system.
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