View Single Post
salvestrom
salvestrom is offline
#12
Feb4-12, 05:33 PM
P: 226
Quote Quote by Chalnoth View Post
I don't think it makes sense to assume that the universe is globally homogeneous. It is obviously locally homogeneous, of course, but global homogeneity is unlikely. So is any sort of global spatial symmetry about which you could possibly define a center.
I think the safest answer is "unknowable". In anthropic universe model's the larger universe beyond our observable one is considered to vary considerably. Aren't you a supporter of this?
The possibilities are by no means black or white, however. a billion lightyears beyond the observable univere to our left may be a void, but we might need to go 4 billion years beyond the observable universe to the right before discovering any inhomogenity. Detractors of inhomogenity often seem to go with this idea that suggesting inhomogenity automatically put us at the center of the local homogeny.