Quote Originally Posted by danzibr View Post
*By "outside the universe" I mean... naively suppose you can pinpoint where in 4-space the big bang occurred. Time passes, universe expands, etc.

Void inside the (observable) universe has properties, like permittivity and permeability of free space. Question is, would the same hold for outside? Would there be a way to know?
Nice questions, even though the answers seem to be "no".