The Ark in Space

076 – *The Ark in Space*
076 – The Ark in Space
Doctor Who serial
Cast
	Doctor Tom Baker – Fourth Doctor;
	Companions Elisabeth Sladen – Sarah Jane Smith; Ian Marter – Harry Sullivan;
	Others Kenton Moore – Noah; Wendy Williams – Vira; Richardson Morgan – Rogin; John Gregg – Lycett; Christopher Masters – Libri; Stuart Fell, Nick Hobbs – The Wirrn; Gladys Spencer – High Minister's Voice; Peter Tuddenham – Voices;
Production
Directed by	Rodney Bennett
Written by	Robert Holmes; John Lucarotti (uncredited)
Produced by	Philip Hinchcliffe
Music by	Dudley Simpson
Production code	4C
Series	Season 12
Running time	4 episodes, 25 minutes each
First broadcast	25 January 1975
Last broadcast	15 February 1975
Chronology
← Preceded by; Robot	Followed by →; The Sontaran Experiment
	List of episodes (1963–1989)

The Ark in Space is the second serial of the 12th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 25 January to 15 February 1975.

The serial is set more than ten thousand years in the future. In the serial, the insectoid aliens the Wirrn intend to absorb the humans along with their knowledge on board Space Station Nerva.