Charon (moon)

Charon was a moon of Pluto, which was considered to be either the ninth planet of the Sol system or a dwarf planet.

The Second Doctor, Ben Jackson and Polly visited Charon at some point in its history. (PROSE: Pluto)

In the mid 22nd century, the Earth government funded a research facility at the Charon colony to find useful applications for tunnel technology.

On 7 May 2157, the Daleks destroyed the surface of Charon. The scientists based there escaped to Mars with the aid of Chris Cwej.

By the 30th century, 800 years later, Charon was still highly radioactive. (PROSE: GodEngine)

Behind the scenes

 * Although Pluto was downgraded from full planet to "dwarf planet" in 2006, numerous stories produced prior to this date and set in Earth's future identify Pluto as a planet and Charon as its moon, suggesting that, in the Doctor Who universe at least, Pluto's planetary status was eventually restored.