More than six months and 300 million miles since it launched from California’s Vandenberg Air Force Base, NASA’s InSight lander is due to arrive at Mars on Monday to study the red planet.

NASA’s study of Mars has focused on the planet’s surface and the possibility of life early in its history. By contrast, the InSight mission — the name is a compression of Interior Exploration Using Seismic Investigations, Geodesy and Heat Transport — will study the mysteries of the planet’s deep interior, aiming to answer geophysical questions about its structure, composition and how it formed.

Read more at NY Times.