today's universe


by binbots
Tags: universe
binbots
binbots is offline
#1
May23-11, 05:55 PM
P: 132
I know it is impossible to see what the universe actually looks like today because of the finite speed of light. But we must have some idea because we know so much about its past, we must be able to predict its current state. Is the universe for the most part full of galaxies in the same evolutionary stage as ours?
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zhermes
zhermes is offline
#2
May23-11, 06:28 PM
P: 1,262
Large scale features of the universe don't change very rapidly. Therefore everything within a 10s of megaparsecs (or more) of us, won't be all that different now from when we're seeing them.

The universe as a whole, we expect, should look similar to our local neighborhood. Both with spiral galaxies like our own, and large ellipticals, and giant clusters, etc.
DaveC426913
DaveC426913 is offline
#3
May23-11, 06:30 PM
DaveC426913's Avatar
P: 15,325
Quote Quote by zhermes View Post
Both with spiral galaxies like our own, and large ellipticals, and giant clusters, etc.
i.e. spans the gamut of very young to very old.


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