Astral Plane
An infinite sea of silvery mists, the Plane of Thought, a barren place of other-dimensional nothingness extending in all directions. What little solid substance that floats in the bright, gray void is typically chunks of matter broken off from their original plane. Adopted home of the githyanki.
"It is the space between everything. It is the road that goes everywhere. It is where you are when you aren't anywhere else."
- A sage