2001: A Space Odyssey is a 1968 science fiction novel by English writer Arthur C. Clarke. It was developed concurrently with Stanley Kubrick's film version and published after the release of the film. Clarke and Kubrick worked on the book together, but eventually only Clarke ended up as the official author. An elaboration of Clarke and Kubrick's collaborative work on this project was made in the 1972 book The Lost Worlds of 2001.