Fact Sheet: InSight

InSight (Interior exploration using Seismic Investigations, Geodesy and Heat Transport) is a NASA Discovery Program mission that will place a single geophysical lander on Mars to study its deep interior. But InSight is more than a Mars mission — it is a terrestrial planet explorer that will open a window into the processes that shaped the rocky planets of the inner solar system (including Earth) more than four billion years ago.