NASAâ€™s InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander aims to study the deep interior of Mars using a seismometer called SEIS. The Seismic Experiment for Interior Structure (SEIS) will measure seismic activity of Mars and provide accurate 3D models of the planetâ€™s interior. It will also use a heat probe to study the early geological evolution of the planet.
NASA recently announced that the InSight lander recorded the biggest, longest-lasting marsquakes the mission has ever detected. The marsquakes was about 4.2 in magnitude and it lasted for around half-an-hour.