Ok so i'm listening to these guys talking about how some TES deity's turned into the stars and sun or something like that, and i kind of don't understand what's going on. So my question is whether astrology in TES is same as real life astrology, please simplify answer.

Magnus is the architect of Creation and creator of magicka (Lorkhan merely postulated the idea). Magicka is basically light. When the Mundus was made, Magnus got mad (forgot the reason. Been too long since i read it) and left. The Sun is the hole Magnus left when he "escaped".

The planets are the planes of the gods. They appear as planets due to mortal mental stress; they basically can't process how they really look due to their mortality.

http://www.imperial-library.info/obscure_text/cosmology.shtml can help you lots.

Hmmm... i just finished reading that link and i gotta say, i'm starting to get intrigued thanks for the link 946000, ok new question, i noticed that it is slightly similar to how egyptian and greek mythology go, so can we trust that this is the actual construct of the TES universe or could this be a sort of religious belief?

It seems Magnus got angry because of how unstable Nirn was.

Hmmm...theory forming....stupid yes, but stil a theory. Magnus was the creator, Lorkhan the inspiration. Alright, we got that. Maybe, when Magnus saw how bad Lorkhan's little plan was and left, that made the other et'ada angry. So, in an attempt to get Magnus to come back, they "kill" Lorkhan and use his heart to stablize Nirn, then stablize it further with themselves.

Stupid yes, but it sounds cool.

Just pointing out: the word you're looking for is astronomy, not astrology. Astrology is how the constellation you were born under influences your life.

The principal difference between astrology in TES and astrology in real life is that in TES, astrology is real.

Basically they're different...
The sun in TES is some kind of portal, and the stars provide magical energy, magicka... or something like that.

Both. TES is a place of myth and magic. Thus, myth and magic are real.

It's a thin line. Both Tycho Brahe and Kepler were astrologers, and Newton was an alchemist. The difference between the terms astrology and astronomy that we make in RL stems from our knowledge about the nature and distance of the stars, which heavily contradicts the ideas behind astrology. There's nothing about the nature of stars in TES to ever contradict their astrology. In conclusion, I'd say the terms may be used interchangeably.

The TES world is certainly more heavily steeped in a western point of view than eastern, and so drawing comparisons back to Western civilization's scions is valid, but to go so far as to say the construct? No.

True, in TES instead of just getting to text a number and have a pre-recorded response "predict" your future based on your sign... You get to paralyze people or turn invisible. Our universe got jipped.

I think Magnus and some of the other gods left because they felt the creation of the Mundus was a trap. Many other gods stayed and were incorporated into the Earthbones.

and now think for just a minute about how saturated with magic Nirn is. The stars, the "sun", they're all holes into the Atherius, where the various spirits left. Magnus, being what mortals perceive as "magic", left the biggest hole when he left.

In regards to the planets:
Imagine if you will, an infinite plane surrounded by a larger infinite plane. Some planets are larger because they are slightly larger infinite planes. Mental stress by trying to comprehend this results in the planets appearing as spheres of various shapes.

Infinities can be different sizes. Or so Wierd once said.

The planets are infinite.

And concerning finite planets, only Nirn is finite.

Correct. The only finite plane present in the Elder Scrolls Lore is in fact, Nirn itself. The rest are infinite planes of different sizes. While this may be a strange concept for mortals, it's quite acceptable to the Gods to have an infinite plane larger than a different infinite plane, with those 2 infinite planes in turn surrounded by the largest infinite plane.

EDIT:
Per Michael Kirkbride:
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.
http://www.imperial-library.info/obscure_text/cosmology.shtml