The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight)[1] mission is a robotic lander designed to study the deep interior of the planet Mars.[11][12] It was manufactured by Lockheed Martin, is managed by NASA's Jet Propulsion Laboratory, and it carries mostly European science instruments. The mission launched on 5 May 2018 at 11:05 UTC aboard an Atlas V-401 rocket[5] and successfully landed[13] at Elysium Planitia on Mars on 26 November 2018 at 19:52:59 UTC.[14][15][5][16] InSight traveled 483 million km (300 million mi) during its journey.[17]
InSight's objectives are to place a seismometer, called SEIS, on the surface of Mars to measure seismic activity and provide accurate 3D models of the planet's interior; and measure internal heat flow using a heat probe called HP3 to study Mars' early geological evolution.[18] This could bring a new understanding of the Solar System's terrestrial planets — Mercury, Venus, Earth, Mars — and Earth's Moon.
https://en.wikipedia.org/wiki/InSight