Gravity is a 2013 British-American science fiction film co-written, co-edited, produced and directed by Alfonso Cuarón. It stars Sandra Bullock and George Clooney asastronauts who are stranded in space after the mid-orbit destruction of their space shuttle, and their subsequent attempt to return to Earth. Cuarón wrote the screenplay with his son Jonás and attempted to develop the film at Universal Pictures. The rights were sold to Warner Bros. Pictures, where the project eventually found traction. David Heyman, who previously worked with Cuarón on Harry Potter and the Prisoner of Azkaban (2004), produced the film with him. Gravitywas produced entirely in the United Kingdom, where the British visual effects company Framestore spent more than three years creating most of the film's visual effects, which comprise over 80 of its 91 minutes.