Trivia
According to Douglas Trumbull, the total footage shot was some 200 times the final length of the film.
The last movie made about men on the moon before Neil Armstrong and Buzz Aldrin walked there in real life. More than 50 years later there are still conspiracy theorists who insist that this is not a coincidence, claiming that all footage of Armstrong's voyage was a hoax film directed by Stanley Kubrick using leftover scenes and props from this movie.
Kubrick himslef provided the breathing heard in the space-suits.
At the beginning, the prehistorical African landscapes are just photographs, not actual clips.
The film inspired David Bowie's 1969 breakthrough single "Space Oddity," which was written about an astronaut stranded in space.
