Stargate SG-1's ten seasons showcased a variety of enemies and planets, but some of its most crucial episodes explored other ideas closer to home.

Thor's Hammer Airing as Episode 10 in Stargate SG-1 Season 1, "Thors' Hammer" starts out with Teal'c (Christopher Judge) mentioning a planet the Goa'uld would never go to, represented by the ...