Aren't the planets only viewed as planets because mortals minds can't understand infinity inside infinity and thus thier mind reasons it into world shapes?
More or less.
What are planets?
The planets are the gods and the planes of the gods, which is the same thing. That they appear as spherical heavenly bodies is a visual phenomena caused by mortal mental stress. Since each plane(t) is an infinite mass of infinite size, as yet surrounded by the Void of Oblivion, the mortal eye registers them as bubbles within a space. Planets are magical and impossible. The eight planets correspond to the Eight Divines. They are all present on the Dwarven Orrery, along with the mortal planet, Nirn.
Like I said, we've got small Infinite Spaces(a) floating inside of a larger Infinite Space(b ) surrounding Infinite Spaces(a/c) (and at least one theoretically Finite one(d)), chock-full of other minor Infinite Spaces©, all surrounded by yet another Infinite Space(e), which is surrounded by at least one, or perhaps 2, even LARGER Infinite Spaces(f).
a-The Aedric plane(t)s
b-Oblivion
c-Potentially Daedric realms, or even just lesser moons
d-Tamriel, if the Realm of Change, would then technically be Infinite... but I'm not gonna get nitpicky here
e-Aetherius
f-At the least, the Void; perhaps even Aetherius is wrapped inside of an infinite bubble trapped in between the Original Forces. I'm not 100% sure on what's floating around at that scale, though.