Doctor Who is a British science fiction television series first broadcast by the BBC in 1963. The series, created by Sydney Newman, C. E. Webber and Donald Wilson, follows the adventures of the Doctor, an extraterrestrial being from a humanoid species known as Time Lords. The Doctor travels through space and time using a time travelling spaceship called the TARDIS, which has an exterior that resembles a British police box. The Doctor encounters various civilisations, which they seek to protect by outwitting foes and solving crises. The Doctor usually travels with a companion.