Board Thread:Lore Discussion/@comment-71.204.109.115-20131008041458/@comment-3573184-20131008222005

Correct in a way.
 * -The Daytime sky is Atherius, or more precisely, Atherial energy flowing in from the sun.
 * -The night sky is Oblivion.
 * -The planets are the infinite realms of the Aedra, perceived as spheres because the mortal mind cant handle infinity.
 * The star are tears in Oblivion that lead to Atherius.

The Aedra cant return to Nirn normally because they died when they created the mortal realm, and thus have very little power. Akatosh was able to "appear" at the end of Oblivion because Martin Septim sacrificed himself, and the oversoul of every emperor who ever lived, which was contained in the Amulet of Kings, and became Akatosh.