Darren New <dne### [at] sanrrcom> wrote:
> gregjohn wrote:
> > Whoa.  I've listened to a whole year of Astronomy Cast, and I thought that the
> > Big Bang *was* about the creation of matter. 

> The big bang is postulated because everything is moving apart. If you 
> reverse time, everything is moving back together again. Much like people 
> knew what temperature was "absolute zero" long before they could get 
> anywhere close to making it in the lab.

  Of course it's not just that simple, as many of the features of the
observed universe don't conform to a simplistic Big Bang. This has prompted
refinements of the theory, including the cosmic inflation, which theorizes
that there was a time shortly after the Big Bang when the universe inflated
at an exponential rate. (And no, this doesn't go against general relativity.)

-- 
                                                          - Warp

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