| Stargate Atlantis | |
|---|---|
| Season 2 | |
 DVD cover | |
| No. of episodes | 20 |
| Release | |
| Original network | Sci Fi Channel |
| Original release | July 15, 2005 – January 30, 2006 |
| Season chronology | |
The second season of the television series Stargate Atlantis commenced airing on the Sci Fi Channel in the United States on July 15, 2005, concluded on The Movie Network in Canada on January 30, 2006, and contained 20 episodes. The show itself is a spin off of its sister show, Stargate SG-1. The series was developed by Brad Wright and Robert C. Cooper, who also served as executive producers. Season two regular cast members include Joe Flanigan, Torri Higginson, Rachel Luttrell, Jason Momoa, Paul McGillion, and David Hewlett as Dr. Rodney McKay. The second season focuses on the Atlantis Expedition continuing to make the Wraith think that the city self-destructed, (The Siege Part III) while continuing to explore Pegasus and hunt for ZPMs (although they do have one now) this means at times lying to new allies about the city even sometimes claiming to be a small contingent that escaped the Siege; the season also marks the first time the Expedition is able to make contact with Earth although doing so uses a lot of power so the contact is oftentimes via the Daedalus, an intergalactic Earth-Asgard vessel commanded by Col. Steven Caldwell who makes clear his desire to be Military Leader of Atlantis but eventually settles for a sort of advisory role as it becomes clear that Dr. Weir and the Lt.Col Sheppard are a duo not to be messed with. The central plot of the second season is the development of Dr. Beckett's retrovirus, which can, theoretically, turn a Wraith into a human.
The one-hour premiere, "The Siege Part III", aired on July 15, 2005. The theme song for the series received an Emmy nomination in the category "Outstanding Music Composition for a Series (Original Dramatic Score)". The series was developed by Brad Wright and Robert C. Cooper, who also served as executive producers. Season two regular cast members include Joe Flanigan, Torri Higginson, Rainbow Sun Francks, Rachel Luttrell, Jason Momoa and David Hewlett.