Magna

From Tardis Wiki, the free Doctor Who reference

Magna was a star system that contained four planets. Only two of these planets, Vaga and its neighbour Pyron ever produced life. Vaga was a unique planet in the system as it had two suns. The Pyrons developed weapons capable to ravaging other planets and used them against the Vagans. The survivors left in an inter-dimensional craft. (PROSE: The Key of Vaga)