The sci-fi series Stargate SG-1, a spinoff of the 1994 film Stargate, follows scientist Daniel Jackson, US Special Operations Colonel Jack O'Neill, Colonel Samantha Carter, and former First Prime to System Lord Apophis, Teal'c of Chulak, as they venture across the cosmos via the Stargate. The Stargate — first used in the 1994 film before being utilized throughout the Stargate SG-1 series — is a machine that was created thousands of years ago to act as a galactic wormhole that is used by the Stargate Command squad on Earth.