The Cairn Sector is located about 33,000 light-years from the center of the Milky Way Galaxy. It is just one of tens of thousands of similar sectors across the galaxy and is notable as a large area of star formation. Though far away, humans on Earth can look up in the night sky and easily see this nebula on moonless nights. Humans have as many names for it as the myths they created around it, from Sah, to Shen, to Nataraja and Orion.
Many star systems in this area of the galaxy have life-giving worlds, The beings that live here have numerous names for it: Cairn, Firion, Zefalna, Sepalla, and more.