Original sentence: In 2004, Stargate Atlantis was released as a spin off from Stargate SG-1 and a new Stargate spin off series entitled Stargate Universe is scheduled to air in the fall of 2009
Edited sentence: In 2004, Stargate Atlantis was released as a spin off from Stargate SG-1 and a new Stargate spin off series entitled Stargate Universe will air in the fall of 2009.These media kept the franchise going in the interim between the film and series trilogies