The Aesir or Asgardians evolved on the world of Asgard about seven million years ago. From here they developed a civilisation from 50,000 years BC that spans almost one hundred worlds densely clustered along a spiral arm on the opposite side of the galaxy from Earth. The Aesir believe themselves to have been uplifted by some kind of godlike being they refer to as Ymir. It is told that one day they are expected to uplift another race to become new defenders of the galaxy. They also believe all the Universe is part of larger lifeform they call Yndrassil or the world tree.