Stargate SG-1 (often abbreviated as SG-1) is an adventure and military science fiction television series and part of 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 television series was filmed in and around the city of Vancouver, British Columbia, Canada. The series premiered on Showtime on July 27, 1997 and moved to the Sci Fi Channel on June 7, 2002; the final episode first aired on Sky1 on March 13, 2007. With 214 episodes over ten seasons, Stargate SG-1 had surpassed The X-Files as the longest-running North American science fiction television series, until it was surpassed by the series Smallville in 2011.
The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite United States Air Force special operations team, one of about 20 teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, the Replicators and the Ori. The series draws primarily upon Egyptian mythology, Greek mythology, Norse mythology and Arthurian legend.
The series was a ratings success for its first-run broadcasters and in syndication and was particularly popular in Europe and Australia. Stargate SG-1 was honored with numerous awards and award nominations in its ten-season run. It also spawned the animated television series Stargate Infinity, the live-action spin-off TV series Stargate Atlantis and Stargate Universe and the direct-to-DVD films Stargate: The Ark of Truth and Stargate: Continuum. Merchandise for Stargate SG-1 includes games and toys, print media and an original audio series.