Svartos was a planet in the Ninth Galaxy that was tidally locked, with one side permanently in the sunlight of its nearby star and the other permanently in the dark. The planet had no sea. (PROSE: Dragonfire)
On the dark side of Svartos was Iceworld, originally a spaceship embedded into Svartos as a prison for the Proamonian criminal Kane, but he modified it to serve as a space trading outpost. Ace later arrived on Iceworld in a time storm created by Fenric. (TV: Dragonfire, The Curse of Fenric)
Just think, everything you've done – or haven't done – since you appeared on Svartos. The smallest actions irrevocably altering futures of a hundred worlds on which you had no right to be. Millions of potential, real futures dislocated. You – every other time traveller – guilty of genocide to an unimaginable degree. How d'you like them apples?