In new research, we used data from InSight to detect and locate four high-speed meteoroid collisions, and then tracked down the resulting craters.
Recently, the InSight mission has observed acoustic and seismic waves from four meteoroid impact events. These waves travel at different speeds, and comparing their different arrival times and other properties allowed us to estimate the location of the impacts.
These impact locations were then confirmed with satellite imaging from the Mars Reconnaissance Orbiter.Knowing the size and exact location of these impact craters helps us calculate the size and speed of the incoming space rock and how much energy the impact released. Once we are confident we know something about the impact that created the seismic waves we detected, we can use the waves to learn about the interior of Mars. What's more, when we compare seismic observations on Mars with observations from Earth and the moon, we can learn more about how the planets formed and how the solar system evolved.
France Dernières Nouvelles, France Actualités
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