» Fri May 13, 2011 2:52 pm
There's the void, which is nothingness. And there's the Aurbis, which is everything that exists. Within the Aurbis is Oblivion, a reflection of the Void. Oblivion is kinda like the Void, except that it exists so it's not completely void. Withing Oblivion are different realms, one for each Daedric Prince, and other, smaller realms. And there's Nirn.
From a nirnocentric point of view, you have Nirn, surrounded by Oblivion, surrounded by Aetherius, and this http://en.wikipedia.org/wiki/Matryoshka_doll-like whole is the Aurbis.
The stars (including the Sun) are holes in Oblivion which let Aetherius' light fall directly to Nirn. This light is not just light, it's also magic, and what allows the world to continue to exist.
Even the realms of Oblivion need Aetherius' light, or they disappear. Oblivion is aptly named, the void-like part of it would devour anything and make it lost and forgotten forever. So you have to continually sustain stuff with the essence of Aetherius.
Phallic symbols are the best ways of channeling Aetherius' energy, which is why you've got all these towers. Egg-like symbols are the best way of shaping and controlling said channeled energy, which is why you've got things like the Sigil Stones. This symbolism is perfectly deliberate, by the way.