How Well do You Know the Stargate Series?
Stargate SG-1 is a television spin-off of Roland Emmerich's 1994 film Stargate. The series was developed for television by Brad Wright and Jonathan Glassner, who together wrote the two-hour pilot episode "Children of the Gods." "Children of the Gods" originally aired on July 27, 1997.
Stargate: Atlantis is a television series which is a spin-off from Stargate SG-1. Stargate: Atlantis began airing on July 16, 2004. Stargate: Atlantis was set up with the seventh season finale of Stargate SG-1, "Lost City, Part 2", in which SG-1 discovers an advanced outpost, built by the Ancients, under the ice of Antarctica. It is through this outpost that, in Stargate: Atlantis' series premiere "Rising", an eight symbol gate address is found that leads to the long-sought-after "Lost City" of the Ancients also known as Atlantis. The search for this city had been an ongoing theme since the sixth season of Stargate SG-1.