There was a story that I don't think Kubrick ever confirmed but his wife gave it a wink and a nod. Supposedly, while he was filming 2001, he was also filming a staged Moon landing for NASA, to be used in the event of a worst case scenario in 1969. (It was during the Cold War and any failure would have to be concealed.) There are quirky references to the Apollo Mission in Space Odyssey, but there are also some errors about gravity and astronomy, possibly intentional while more accurate footage was assembled for NASA. In 1980, The Shining references backward to Apollo 11, such as Danny's sweater in one scene. I have heard some conspiracy theorists use these cues as evidence that the Apollo 11 landing was a hoax.