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Stargate SG-1 episode
“Ripple Effect”
Original Air Date	SciFi Channel: January 20, 2006
Season	9
Episode #	13
Production #	9.13
Writer(s)	Joseph Mallozzi Paul Mullie
Director	Peter DeLuise
Guest star(s)	Teryl Rothery JR Bourne Gary Jones Bill Dow Lexa Doig
Episode Order
Previous	Next
"Collateral Damage"	"Stronghold"

Ripple Effect is episode 13 of Stargate SG-1 season 9.

Plot

Several SG-1 teams come through the Earth gate and Col. Carter believes they have been accidentally displaced. SG-1 goes on a mission with alternate versions of themselves to find a black hole that will enable their alternate selves to return home.

Related

• Parallel universe
• Asgard
• Black hole
• Janet Fraiser
• Prometheus
• Martouf
• Zero Point Module

Related Episodes

• "There But for the Grace of God"
• "Point of View"
• "Beachhead"
• "Heroes, Part 2"
• "The Fourth Horseman, Part 2"