For years, scientists have used spacecraft to explore the surface of Mars. But what lies beneath the planet’s red, dusty crust is still a mystery. Scientists now have a chance to uncover Mars’s deepest secrets. A new spacecraft called InSight recently landed there.

InSight will measure the temperature below the Martian surface. It will also study marsquakes—Mars’s version of earthquakes. The information it sends home could help us understand how to survive on Mars one day. NASA, the U.S. space agency, says people could be living there by the 2030s!