The Outlands

The Outlands, more commonly known as Outland or The Edge, is the plane of existence that sits between the Elemental Planes and the Outer Planes. Outland is the most hospitable plane of The Borderlands, and is very similar to the universe in composition.

Environment
While The Outlands may appear to be similar to the universe in composition, it's likeness is only an illusion. The Outlands, and likewise the other planes were not formed by any natural process