Nebula

Nebulae are clouds of dust and gas that are found in space. In 2004, the Earth vessel Prometheus encountered an Interstellar cloud, a sentient nebula. In 2005, when Daniel Jackson was stuck in the Astral Diner, the newspaper mentioned a Gondolthian nebula. In 2008, the Atlantis Expedition tracked Teyla Emmagan, who was posing as the Primary. On one of the stops, a Hive Ship arrived over a nebula.