I have an interesting theory/idea for the dwarven lore or (hopefully) DLC. My theory on the Dwarves is that they were infact abducted by aliens together as a race. Nirn isn't the only planet in the solar system, so its possible that there is life on other worlds. The aliens would have recognized that the Dwarves were WAY ahead of all the other races in terms of technology and science and should live with the aliens. I know this sounds crazy, but I personally think this would make an awesome DLC where the Dragonborn manages to find this information out and go to the alien-dwemer civilization. I know it sounds a lot like Mothership Zeta, but wouldn't it be awesome to finally uncover the dwemer mystery???
The other planets in the solar system are the gods.
This is a mythical universe, a geocentric one too, with Nirn in the middle.
Everything circles around Nirn. The Sun is a hole in the sky through which magic enters the world.
The stars are smaller holes to that magical realm of Aetherius, they are all at the same distance from Nirn and some seem bigger not because they are closer, but because they are bigger holes.
The moons are the body of a dead god.
Beyond the Mundus lies Oblivion and that is what you look into when you look up at night.
Sorry, there are no aliens.
There are a whole lot of gods though, and there even is space travel. By Imperial mananaut, Altmeri Sunbird, or if youre a Khajiit, by climbing.
The Dwemer uncreated themselves, or rather, Kagrenac uncreated the Dwemer unto Numidium.
They became its golden skin between the mundane and the divine, in an attempt to escape the Doom Drum and return to the first brush stroke of Anu and Padomay.
They became part of a big giant stompy robot, and that blew up. Twice.
http://www.imperial-library.info/content/cosmology
http://www.imperial-library.info/content/final-report-trebonius