Stargate Atlantis - Season 2 Episode 13 : Critical Mass
With the Ancients' city of Atlantis discovered in the Pegasus Galaxy by Stargate Command, Dr. Elizabeth Weir and Major Sheppard lead a scientific expedition to the ancient abandoned city. Once there, the team not only find themselves unable to contact Earth, but their explorations unexpectedly reawaken the Ancients' deadly enemies, The Wraith, who hunger for this new prey. Now with the help of newfound local allies like Teyla Emmagan, the Atlantis Team sets about to uncover their new home's secrets even as their war of survival against the Wraith begins.
First Air Date : Jul 15, 2004
Last Air Date : Jan 08, 2009
Runtime : 45 min.
Genre : Sci-Fi & Fantasy, Action & Adventure, Drama
Stars : Joe Flanigan, David Hewlett, Rachel Luttrell, Jewel Staite, Robert Picardo, Jason Momoa
Quality : 
- Eps. 1 : The Siege (3)2005-07-15
- Eps. 2 : The Intruder2005-07-22
- Eps. 3 : Runner2005-07-29
- Eps. 4 : Duet2005-08-05
- Eps. 5 : Condemned2005-08-12
- Eps. 6 : Trinity2005-08-19
- Eps. 7 : Instinct2005-08-26
- Eps. 8 : Conversion2005-09-09
- Eps. 9 : Aurora2005-09-23
- Eps. 10 : The Lost Boys (1)2005-09-23
- Eps. 11 : The Hive (2)2005-11-16
- Eps. 12 : Epiphany2005-11-28
- Eps. 13 : Critical Mass2005-12-05
- Eps. 14 : Grace Under Pressure2005-12-10
- Eps. 15 : The Tower2005-12-19
- Eps. 16 : The Long Goodbye2006-01-02
- Eps. 17 : Coup D'etat2006-01-09
- Eps. 18 : Michael2006-01-16
- Eps. 19 : Inferno2006-01-23
- Eps. 20 : Allies (1)2006-01-30
