This study was made possible thanks to data collected by InSight's high-tech seismometer before the mission's termination due to dust accumulation on the lander's solar panels.
First meteoroid impact detected by NASA’s InSight mission; the image was taken by NASA’s Mars Reconnaissance Orbiter using its High-Resolution Imaging Science Experiment camera.A fresh examination of marsquake data revealed a meteorite mayhem on Mars. The Red Planet is getting hammered by space rocks way more than planetary scientists ever imagined.
This shows that the Red Planet is impacted by 280-360 basketball-sized space rocks almost every year. This rate is five higher than previous estimates based only on satellite images. These meteorites leave their mark, carving out craters bigger than 8 meters wide across the Martian surface.However, researchers have now identified a new tool—listening to Mars with supersensitive seismic equipment.
The research team identified a unique pattern of seismic signals unlike anything seen before. These unique signals are believed to be the signature of a much higher rate of meteorite impacts on Mars than previously estimated. It turns out these belong to a whole family of quick, powerful tremors on Mars called “very high-frequency events.”: “These events have a predominantly high-frequency content , indicating a fast source process .
Data suggests that the planet is hit by a meteorite creating an 8-meter crater almost every day, with larger 30-meter craters forming monthly.
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