Dagan is a planet in the Pegasus galaxy. When the Ancients fled Atlantis after the war with the Wraith, one of the Ancients left a Zero Point Module with the Quindosium, mebers of an order which belonged to the Sudarian society that worshipped the Ancients. Over ten thousand years of Cullings left the Sudarian society extinct, while the modern Daganians were at a renessaince level of technology. However, there was a portion of the population who still followed the ways of the Quindosium and worshipped the Ancestors. After an alternate Elizabeth Weir was awoken from her stasis pod and gave a list of planets with ZPMs, Atlantis 1 travelled to Dagan and found the ZPM, but the new members of the Quindosium took it from them. (SGA: "The Brotherhood")

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