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Today's universe

by binbots
Tags: universe
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binbots
#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
#2
May23-11, 06:28 PM
P: 1,261
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
#3
May23-11, 06:30 PM
DaveC426913's Avatar
P: 15,319
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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