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The U.S. government creates Stargate Command to explore the galaxy and acquire advanced technologies to defend Earth. SG-1 makes many new friends -- and new enemies.
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The team encounters a Goa'uld resistance movement and forms an alliance with the Tok'ra. Captain Carter's life is forever transformed, and the team witnesses the fall of a powerful enemy.
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Earth signs a treaty with the Goa'uld to prevent invasion, but SG-1 continues to encounter deadly enemies -- including Sokar, a powerful rogue Goa'uld poised to conquer the galaxy.
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Earth joins the fight against the Asgard's seemingly unstoppable enemy, and SG-1 discovers that the Russians have started a Stargate program. The team's arch enemy becomes more powerful than ever before.
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A powerful new Goa'uld enemy threatens to annihilate Earth and its allies. The System Lords renew their alliance, and one member of the team begins a new journey.
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Jonas Quinn joins SG-1, and the team faces a powerful new Goa'uld threat. Colonel O'Neill is forever altered, and the Asgard's conflict with the Replicators comes to a head.
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Daniel Jackson rejoins the team after an incredible experience, as the team must find the Lost City of the Ancients to defeat a terrible enemy.
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Change is in the air at the S.G.C., as Jack O'Neill steps into the big shoes following General Hammond's reassignment. Old enemies prove they can't be written off so easily.
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Neither SG-1 nor Stargate Command will ever be the same when a new member joins the team, and a new commanding officer is assigned. An amazing new enemy reveals itself to Earth.
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The Milky Way Galaxy stands on the brink of destruction as the Ori worshippers invade, and Vala Mal Doran joins SG-1 to try and help stop them.
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