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Re: infinite universe

Subject: Re: infinite universe
From: Joseph Lazio
Date: 04 Mar 2006 16:11:42 -0500
Newsgroups: sci.astro, sci.physics
>>>>> "BR" == Ben Rudiak-Gould <[email protected]> writes:

BR> Joseph Lazio wrote:
>> Having said that, if one thinks that general relativity is the
>> correct theory of gravity, the current observational data are
>> consistent with a prediction from GR that the Universe is infinite
>> in spatial extent.

BR> I don't think GR can be said to predict an infinite universe. GR
BR> doesn't say anything about global topology. The observations and
BR> GR are consistent with an infinite universe, but also with a
BR> Poincare dodecahedral space, and with all kinds of wild topologies
BR> that are homogeneous and isotropic in our neighborhood but not
BR> globally.

Oops, correct.  One needs to add a qualifer about the "most simple
topology" to my initial statement.

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