Season 5, Episode 17 Fail Safe

First Aired: December 12, 2001

SG-1 is Earth's last line of defense when the planet is threatened by a giant asteroid.

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  • Premiered: July 27, 1997
  • Rating: TV-PG
  • User Rating:4.89 out of 5 (208 ratings)
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  • Premise: A military unit uses an ancient archway to travel the universe and battle alien parasites in this cult sci-fi adventure based on the 1994 film `Stargate.' Curmudgeonly Col. Jack O'Neill teams with an archaeologist, an astrophysicist and an alien to combat… (more)

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