InSight’s seismometer, SEIS, has recorded over 480 marsquakes. Analyzing seismic waves from these quakes indicates Mars has a three-tier crust that’s about 23 miles thick.
Data beamed back to Earth from NASA’s InSight lander suggests Mars’ crust is composed of three cake-like layers.
Anchored near Mars’ equator, the robotic lander’s super-sensitive seismometer, known …
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