Darren New <dne### [at] sanrrcom> wrote:
> Warp wrote:
> >   Galaxies do not expand because their gravity keeps them in shape. In
> > other words, gravity inside (and near) galaxies is strong enough to
> > "resist" the expansion. Consequently nothing inside galaxies expands.

> Hmmmm.... I'll take this idea with a grain of salt. :-)

  Why?

> >   Another slightly difficult thing to grasp is that a constant expansion
> > of the universe actually means that galaxies recede from us at an exponential
> > rate. At each certain unit of time space distances double, which means that
> > the distance between two galaxies grows exponentially with time. 

> Yet, funny enough, the number of galaxies we see in an area is constant 
> for a given volume, or close to it. This implies that perhaps the 
> galaxies aren't receding at all, and space isn't growing at all.

  Why? If the expansion is even throughout the universe and galaxies where
distributed about equally to begin with, they will be distributed equally
at all times regardless of the expansion.

> I saw an interesting paper that postulated that what we observe would 
> also be correct if further galaxies simply had a time axis pointing away 
> from us.

  Are we the center of the universe?-)

> It explains why we see a constant number of galaxies in 
> a given space

  I don't understand why an expanding universe couldn't have a constant
number of galaxies in a given space.

-- 
                                                          - Warp

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