InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a lander designed to inspect the crust, mantle, and core of Mars. This will help scientists learn more about the formation and evolution of terrestrial planets.
The mission may well rewrite textbooks, as this is the first time a robotic arm will pick up an instrument and place it into the surface of another planet.
At launch, the lander’s instruments are securely stowed on the lander deck. It is the job of InSight's robotic arm to place them on the Mars surface after landing. There's a lot of pressure on the team and the robotic arm to make all the right moves.