2. Cosmology

The Yrniverse is geocentric. At the center of space, the planet Orbis Prime is fixed for all time.

In orbit around the central world are hundreds—perhaps thousands—of celestial objects, including planets, the sun, the moon, and other stranger things. These all travel in the circles of heaven.

At the outermost sphere, the stars shine—some more than others. What lies beyond the stars depends on what apocryphon you read…