Doctor Who is a British science-fiction television series that has been broadcast by the BBC since 1963 and continues to this day. The adventures of the Doctor, a Time Lorda humanoid extraterrestrial who can travel across space and timeare depicted in the series. His TARDIS, a sentient time-traveling space spacecraft, allows him to explore the cosmos and learn about the universe. Its appearance is designed to resemble a blue British police box, which was a regular sight in the United Kingdom in 1963, when the series premiered on television. With the assistance of his friends, he battles a wide range of adversaries while fighting to rescue civilisations and assist those in need around the world.