Polis Massa was once abarren planetoid and the origin of a colony of resulting asteroids. It was originally the homeworld of the little-known Eellayin civilization. Polis Massa was friendly to the Jedi. Far from any major trade route, the remote settlement served as a sanctuary after Order 66, during the rise of the Empire and Palpatine's Great Jedi Purge. The colony also housed the medical facilities in which Padmé Amidala gave birth to the twins Luke and Leia, and subsequently died because she lost the will to live. It also served as a Rebel base during the Galactic Civil War.