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Old 06-08-2009, 08:34 PM
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GeoffW1 (Geoff)
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Quote:
Originally Posted by xelasnave View Post
I dont know but it can not be infinite under the Big Bang Theory that is for sure (I think)

I used to have great difficulty in accepting the size to age thing until I understood the concept of space expanding.. how can it be 160 billion light years if matter is limited to C and the age is 13 billion..one will come up with a Universe with a radius of 13 billion light years..but add space expansion and I can see the opportunity for those bigger than expected estimations.
I have been looking around the net and have not found two estimates the same so far.
alex

alex
It can be infinite. General Relativity (and we are not even sure if that is correct over mega-cosmological distances since we have not yet been able to test it to that degree) places no limit on the expansion of space-time.

That is how we can observe stuff over 46 billion light years away even though we think the age of it is less than 14 billion years.

We really need to be able to detect gravity waves (as yet theoretical) before we can take the next step to understanding all this.

Cheers
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