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Geoff said.....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.
I think infinite means infinite and even though GR sets no limit something can not start azs finite and grow to infinite..or so I believe... double the Universe in size everday for a trillion years it is still a finite size and although huge still is not infinite... the way I understand it you can not add subtract or divide infinite and be left with anything greater or less than infinite ...
I read some stuff on infinite once and they say folk into it go crazy and I could understand why.
alex
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