The motif is a common one, and includes both real and fictional planets.

She claimed to have received a message from a fictional planet named Clarion.

The game takes place on Nexus, a fictional planet said to be on the edge of known space.

The novel is set in the future, on the fictional planet of Shora, a moon covered by water.

The fictional planet is probably better known than the real chemical element called Krypton.

The series is set on the fictional planet of Brackenwood.

The game takes place on the Earth, Moon, and 7 fictional planets.

Shikasta is also the name of the fictional planet featured in the novel.

They were created by humans in a group of fictional planets called the twelve colonies.

Later similar tales often took place on fictional planets.