Karthos
From Tardis Wiki, the free Doctor Who reference
Karthos was a Mining colony a couple of parsecs away from the Braxiatel Collection. It was supposed to be an uninhabited but Caitlin Peters found an ancient civilisation. It had a burning sky however the it was often cold on its surface, according to a pregnant Bernice Summerfield. (AUDIO: The Skymines of Karthos)