Annoying nitpick:
> Our solar system and its planets, the millions of other solar systems that constitute our galaxy, and the island universes themselves all lie within the boundaries of the station. The station is coeval with the cosmos [...]
> Estimated diameter: 15,000 light years.
Uhmm..
Yes I know, the entire construction is not striving for realism and neither should be taken literally.
Pretty sure this is a Tardis bigger-on-the-inside situation
If you like nitpicking, Poe's short story *The unparalleled Adventure of One Hans Pfall" [1] should keep you busy a couple of days ;-)
[1] https://en.wikipedia.org/wiki/The_Unparalleled_Adventure_of_...