In a last ditch effort, O'Neill activated an Ancient weapon in the Antarctic ...
Stargate SG-1
Season 8 Episode 19: Moebius: Part 1
With the threats of both the Replicators and the Goa'uld greatly diminished and the sister ship to the Prometheus, the Daedalus, now under construction, SG-1 is anxious to get a ride on the new ship. However, the mood is somewhat darkened...