- Shot in 33 days.
- Shot during a writer's strike, which had caused most other productions at Shepperton studios to shut down. Director Duncan Jones says he got a number of top-class effects people on the crew because of the lull.
- Outdoor moon scenes were shot using practical effects (small models). Shooting took place over 8 days according to Cinefex magazine July 2009.
- According to director Duncan Jones, the film was shown to some NASA scientists who questioned why harvesting of H3 would not take place on the near side of the moon, where H3 is in more abundance. The explanation given was that the choice was made to harvest the far side so as not to affect wildlife.
- In the galley, the shelf is marked 'Soylent'.
- Many of the "girlie" pictures taped next to Sam Bell's bathroom mirror are by the classic American pinup artist Gil Elvgren (1914-1980).
- The song that plays on Sam's alarm clock is The One and Only by British one hit wonder Chesney Hawkes.
- As part of the presentation of the movie at NASA, the director was asked about the sturdy, bunker-like design for the base. The director explained that he thought that astronauts would build the base using material dug out of the moon itself, instead of bringing a habitat with them and placing it on the surface. As it happened, one of the other audience members was working on "mooncrete", which as she explained to the director is a concrete-like material that could be made out of rocky "regolith" on the lunar surface.
- On one of the mineral tubes that Sam unloads from the mining machine has the word Sarang written in English and Korean. Sarang is Korean for "love". Sarang also means peacock in Sanskrit language, and means nest in the Malay language as well.
- When Sam is transmitting a message to Earth from the rover, the image of the Earth is identical to a photo taken by the Apollo 17 crew.
- The film makes several references to Stanley Kubrick's 2001: A Space Odyssey (1968). GERTY looks and sounds similar to HAL 9000. They even have a similar dot. HAL's was red. GERTY's is blue. And Moon (2009) choreographs scenes in space to classical music. Just as Stanley Kubrick did.
- The smiley face icons on GERTY change depending on what his mood is.
- Duncan Jones directorial debut.
- Before making Moon (2009), Duncan Jones was more famous for being the son of David Bowie. Indeed, one of the producers, Trudie Styler is married to another rock singer, Sting.
- Made on a 5 million dollar budget.
- Aside from Sam Rockwell and Kevin Spacey, there are no other major characters in the film.
- Since Duncan Jones came from an effects background in commercials, he drew upon his past experiences in creating effects under low budgets when making Moon (2009).
>>> WARNING: Here Be Spoilers <<<
Trivia items below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- SPOILER: The last word that the announcer says on the video shown before the return to Earth capsule is launched is "Annyeonghikyeseyo," which is Korean for "good-bye," but only if the speaker is leaving, and the listener is remaining put. It could therefore be more accurately construed as "you're not going anywhere." Seeing as Sam is a clone and the so-called "pod" is in reality an incineration chamber, the use of "annyeonghiKYEseyo" (as opposed to "annyeonghiKAseyo") is probably a deliberate in-joke. The director claimed to have been dating a Korean at the time he either wrote or shot this film, so the nuance is plausible.
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