Board Thread:Lore Discussion/@comment-71.58.163.238-20130703034923/@comment-25047024-20131230112507

No one can know how big Tamriel really is. For example, the minds of mortals on Nirn make the infinite Planes of the Aedra look like Planets because they can't comprehend infinity. The moons were Lorkhans dead body, but some people now worship them as two different gods. This makes them infinite too, but to a mortal, they appear to be spheres.

Nirn could be a subject to this perception too. Since Nirn is a Frankenstein-like planet consisting out of many divine parts which form the earthbones and since Lorkhans Heart gave Nirn it's 'divine spark', Nirn could also be infinite. To the mortal mind, it appears finite. Tamriel could also be 'infinite' but be, through mortal belief, finite.