If space is Oblivion, the Sun and stars are holes to Aetherius, the moons are Lorkhan's corpse and the Aedric realms are planets, then what is Mundus and are the Daedra also planets?

Yes. Sort of. The Aedric 'Planets' are infinite spatial planes, similar to the Outer Planes in the Great Wheel Cosmology for D&D, but appear as spherical planets to mortals because of their inability to properly comprehend infinity.

Mundus is a bubble dimension at the centre of the Aubris, surrounded by Oblivion, which contains Nirn, which is its self basically a solitary finite globe at the centre of creation, and the Aedric Corpse-Plane(t)s.

There have been many attempts to visualise the structure of the Aubris, though i think https://s-media-cache-ak0.pinimg.com/originals/03/23/b7/0323b7523cdb382e8f997b82e94a47ad.jpg is one of the easier ones to follow.

Whoops, I got the Aedra & Daedra confused and have edited my post.

Oh, ok, in that case... Sometimes. The Daedric Planes are subject largely to the whim of their ruler. If the Prince wants it to be a planet, then it's a planet. If they want it to be an island in the middle of a sea, then it's an island in the middle of a sea. If they want forest glade, then it's a forest glade.


The same rule seems to extend to smaller planes, where the Daedra in charge has a great deal of influence over it's shape and biome.


Of course, a Daedra's power factors in as well, and they aren't able to maintain infinite spaces indefinitely. Clavicus Vile had to dramatically shrink his realm to a few hundred square feet when Umbra tore a strip off of him.

The Stones are magical and physical echoes of the Zero Stone, by which a Tower might focus its energy to mold creation. Oftentimes, the Stones borrowed surplus creation from Oblivion, grafting it to the terrestrial domain of its anointed Tower.


It was and is difficult to bypass Oblivion to go directly to creation's source, the Aetherius. It has been done, but not without great expenditure, mundane and otherwise. However, access to Oblivion, the Void that surrounds Mundex Arena, which we might touch every night, was child's play in comparison.


Cultivating creatia that washed into the Void from Aetherius became the rule among Stones.


The Daedric Realms were formed on much the same principle: padomaic powers using aetherial refuse to build their void-territories. The Towers built on the Mundus, since the lands around them congealed in the absence of the gods, were unable to match the capriciousness of the Lords of Misrule.

https://www.imperial-library.info/content/nu-mantia-intercept

I believe part of the reason the Daedric planes are so flexible is that they are subject to the will of just one entity, the resident Prince, while the Mundus is subject to the will of several entities, a great many of which are 'dead'. For an entity to alter the nature of the Mundus requires that they either overpower the combined wills of the Aedra and Earth Bones or somehow convince enough of them to reach a consensus, despite the fact that the Earth Bones are just barely conscious on a good day and the Aedra may have a less important opinion since they didn't put as much of their power into the Mundus. Tiber reshaping Cyrodiil from jungle to temperate forest would probably be an example of overpowering local Earth Bones, and possibly with the support of Akatosh and Lorkhan, even though Lorkhan was dead at the time. A Prince, meanwhile, can do whatever they want on their plane because there's nobody to dispute it.