Pyramid ran an article that applies pretty well to Nine Worlds (as well as Kester's Crystal Spheres). It is: Fantasy Cosmology: When the Stars Are Just Lights by David Morgan-Mar. In fantasy games, the sky's the limit . . . especially if you crack the sky-shell of starlights and anger the gods.

If you subscribe to Pyramid, I reccomend the article - it asks quite a few questions and presents some answers that might apply (or Matt may come up with his own).

Anyway, if you don't subscribe to Pyramid, any chance you might subscribe?

Link to current contents http://www.sjgames.com/pyramid/current.html