Explaining a Movie on Instagram: "For 2001: A Space Odyssey, Stanley Kubrick and production designer Harry Lange built a 30-ton, 38-foot rotating drum, essentially a giant hamster wheel the actors could run inside. The spaceship’s interior was mounted on a wheel that spun 360 degrees, and the camera was bolted directly to the structure. As the set rotated, the camera rotated with it, keeping the frame perfectly stable. To create the “running in a loop” effect, Keir Dullea jogged in place while t