Dr. Jennifer Keller's treatment worked. The Wraith no longer needed to feed on humans. A section of Pegasus was ceded them and they established colonies of their own. An uneasy peace settled on Pegasus. Trust would be a long time coming.

D.J. was only the first child in the modern era to live and grow up on Atlantis. In time, she'd be joined by a brother, Charlie and a sister, Sarah. Other children would be born on Atlantis as well. Toran John Emmagan, born to Teyla and Kanaan. Matthew and Samuel, born to John and Elizabeth. Adam and Cory, born to Rodney and Jennifer. Ronan would meet a kickboxing security officer named Amelia and together they would have Melanie.

Earth would grant Atlantis colony status ten years after the expedition first left Earth. Five years after that, the Stargate Program would go public and the world, along with Buffy, Willow, Dawn and Joyce would find out what Faith already knew, what Xander and Cordelia had been up to. By that point, Xander would be a Colonel himself. Dawn would find a home on Atlantis herself, after she graduated college, eventually marrying and having a family there. Thanks to Xander's idea on to how stop Glory years ago, none of the Scooby Gang ever knew she was the Key. If any Ascended ever knew, they never mentioned it.

John Sheppard would go on to command a ship, while Xander would take over as Atlantis' chief military officer. Keller's testing of him would eventually help him learn how to trigger the healing ability dormant in all natural gene holders. And as he had once optimisticlly noted, it did eventually become an accepted part of Earth culture, but that would take time and alot of fear would have to be worked thru. Atlantis and most of Pegasus never had a problem with it.

The ZPM processing plant was found in a somewhat decayed orbit of the supermassive black hole at the center of Pegasus. They were able to pull it back into a proper obit. It had been shut down by the Ancients before they left Atlantis, but McKay and Zalenka figured out how to get it running again. The ZPM's made it possible for Earth to establish colonies in the Milky Way. And help the people of Pegasus to grow.

At the end of his life, Xander passed the High Councilorship of Atlantis to D.J., who watched over Atlantis as faithfully as her father had.

Lex and Cor continued to watch over their adopted home galaxy and their group continued to grow. They helped where they could, in small ways. Small being the best way. Because humans can't learn and grow if someone else does it for them.