Moon

This article is about moons in general. For Earth's moon, see the Moon.

A moon (also known as a natural satellite or luna) is an astronomical object that is found in orbit around a planet. Some moons, like Voga, are planetoids brought into orbit around a planet by the planet's gravity, while others, like the Moon, are of uncertain origin. (DW: Revenge of the Cybermen, Doctor Who and the Silurians)