Marsquake Data Uncovers “Lumpy” Martian Interior Shaped by Ancient Impacts
Key Facts Artist’s cutaway illustration of Mars showing debris from ancient impacts (bright fragments) scattered through the mantle. Seismic waves from a meteoroid impact (left) travel through this lumpy interior before being detected by NASA’s InSight lander (right) on the surface watchers.news watchers.news. Probing Mars’ Interior: InSight Mission Background NASA’s InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission was the first to directly measure the Red Planet’s “vital signs” – its seismic activity, internal structure, and heat flow. Landing in 2018, InSight deployed the first seismometer on Mars, and over four years it detected 1,319 marsquakes before