New Earth (Doctor Who) New Earth (Doctor Who) "New Earth" is the first episode of the second series of the British science fiction television series "Doctor Who". It was first broadcast on BBC One on 15 April 2006. The episode is set five billion years in the future on the planet New Earth, a planet humanity settled on following the destruction of the Earth in the 2005 episode "The End of the World". In the episode, the alien time traveller the Tenth Doctor (David Tennant), his travelling companion Rose Tyler (Billie Piper), and their old enemy Lady Cassandra (Zoë Wanamaker) uncover many artificially-grown humans
The Doctor (Doctor Who) Ninth Doctor already regenerated and fully stabilised, with no explanation given. In his first appearance in "Rose" (2005), the Doctor looked in a mirror and commented on the size of his ears, suggesting that the regeneration may have happened shortly prior to the episode, or that he has not examined his reflection recently. Some draw the conclusion that the Ninth Doctor's appearances in old photographs, without being accompanied by Rose, may suggest that he had been regenerated for some time, but these appearances could have occurred afterwards. Russell T Davies, writer/producer of the new series, stated in "Doctor Who Magazine"