Nibiru, a world covered by forests and containing at least one sizable lake, existed within the Kakani sector of the Outer Rim Territories.
Princess Leia's emergency landing on Nibiru during the Galactic Civil War triggered the events of the mission to Nibiru.
The name Nibiru is the same as a real-world hoax about a supposed planetary object called "Nibiru," also called "Planet X." Some people thought this object would collide with Earth and cause the end of the world. The name Nibiru originates from Babylonian astronomy, where it refers to the star of Marduk, frequently associated with Jupiter.