In a parallel universe explored by Rose Tyler in her search to find the Doctor in N-Space, a rogue planet, one twelve times the size of Jupiter, was disrupting Earth's gravitational stability, ultimately causing its population's death. Only a few hundred thousand managed to survived, as they headed down bunkers developed by Professor Clive Finch, who'd anticipated such an event could happen, after the prophecy of the three comets. (AUDIO: The Rogue Planet)