As many others appear to be so am I writting a HP/Stargate crossover and I have been trying to figure out just how old the Alterans/Ancients are. From what I remember so was it mentioned in the episode "Frozen" in Season 6 of SG-1 that the oldest gate in the Milky Way Gate System was around 50 million years old, meaning that they would be over 50 million years old, but does anyone know how old they were when the split between Ori and Alteran happened?

I have read stories were the Ancients have been anything from fifty thousand years to half a billion years old.

Is there something in canon that states how old they are or do you just guess?

 

http://gateworld.net/

Not sure if the answer is there, but try it.

 

I figure they're between 50-60 million years old, probably closer to 60 million than 50. They built the Stargates and the oldest one in this galaxy is 50 million years old, as has been said. Also, since they migrated from another galaxy (since the Ori/Alterans are the same race and they come from a different galaxy) I figure they must have developed the Stargate network before they left there (since the Priors know how to use the network/supergate).

So, yeah, about 60 million years old I would think.

Aekiel