The television series Stargate Atlantis premiered on the Sci Fi Channel, introducing audiences to the spin-off of Stargate SG-1.
The finale of the first season of Stargate Atlantis aired, concluding the initial storyline and setting up future developments.
The third season of Stargate Atlantis began airing, bringing new characters and expanding the story arcs.
The final episode of Stargate Atlantis aired, ending the show's five-season run after 100 episodes.