SourceMaterial-Daggerspace

Cosmology

The world of Avlis uses the cosmology set forth in Advanced Dungeons & Dragons Second Edition for determining the nature of planets, stars, and space. According to this model, each star and all of its orbiting objects are enclosed by a Crystal Sphere many times the diameter of the star. The distance from the star to the furthest orbiting object is usually the same as the distance from the furthest orbiting object to the wall of the Crystal Sphere. The objects in the night sky that groundlings call stars are in fact holes in the Crystal Sphere which permit a properly-equipped space-faring ship to exit through them. "Spelljamming" is the term used to describe magical flight through space and beyond.

Outside of the Crystal Sphere is a translucent ether substance called "phlogiston" in which the Crystal Sphere floats. The "Phlogiston Flow" is the area outside of The Crystal Sphere that shines with about half the amount of light on a normal day. Phlogiston as a substance is highly flammable and can ignite with the slightest spark causing damage to a vessel and its crew.

Daggerspace

The Crystal Sphere which contains Avlis and its fellow worlds is called Daggerspace.