S06E01Doctor Who season 6 episode 1: The Impossible Astronaut (1)
Aired 23 April 201144 minRated TV-PG
Where to watch Doctor Who Season 6 in Australia
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Availability checked 16 November 2026.
What happens in “The Impossible Astronaut (1)”
Placing his life entirely in their hands, the Doctor agrees to search for the recipient of the fourth envelope - just who is Canton Everett Delaware the Third? And what is the relevance of their only other clue: 'Space 1969'? Their quest lands them - quite literally - in the Oval Office, where they are enlisted by President Nixon himself to assist enigmatic former-FBI agent Canton, in saving a terrified little girl from a mysterious spaceman.
Episode summary: TMDB.
Before you watch
- It is the season premiere of season 6.
- It runs about 44 minutes.
- Directed by Toby Haynes, written by Steven Moffat.
- TMDB users rate it 8.4 out of 10 (86 votes).
Doctor Who trailer
The official trailer for the series (no preview of this episode has been published).
Play video: Doctor Who trailer
Cast and crew of this episode
- Director
- Toby Haynes
- Writer
- Steven Moffat
- Guest stars
- Alex Kingston as River SongWilliam Morgan Sheppard as Old Canton DelawareStuart Milligan as President Richard NixonChukwudi Iwuji as Carl PetersonMark Griffin as PhilSydney Wade as Little GirlNancy Baldwin as JoyKieran O'Connor as Prison Guard
Credits: TMDB.
More from Doctor Who Season 6
Every episode of Season 6Doctor Who episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.