Stargate SG-1 is a military science fiction adventure television series within Metro-Goldwyn-Mayer's Stargate franchise. The show, created by Brad Wright and Jonathan Glassner, is based on the 1994 science fiction film Stargate by Dean Devlin and Roland Emmerich. The series premiered on Showtime on July 27, 1997, and moved to the Sci Fi Channel on June 7, 2002; the series finale aired on Sky1 on March 13, 2007. It also spawned the animated television series Stargate Infinity, the live-action spin-off TV show Stargate Atlantis, Stargate Universe and Stargate Origins.