It was discussed in the season one ep where they thought they were getting home That all they need is the power to make contact and the receiving gate can maintain the wormhole. So all the SGC has to do is open the wormhole and Alantis can matain it.
Also the ep with the blackhole in SG1
and the ep when the rusians gated to a water world
Also the ep with the blackhole in SG1
and the ep when the rusians gated to a water world
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