"The Impossible Planet" is the eighth episode of the second series of the British science fiction television series Doctor Who, which was first broadcast on BBC One on 3 June 2006. It is the first part of a two-part story. The second part, "The Satan Pit", was broadcast on 10 June. The episode is set on Krop Tor, a planet orbiting a black hole. In the episode, a human expedition group drilling on the planet is terrorised by a creature calling itself the Beast (Gabriel Woolf), which possesses the Ood slaves in the humans' base.