RE: expansion of universe

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From: Steve Beeson (beeson@asu.edu)
Date: Thu Dec 16 1999 - 09:12:05 PST 

Date: Thu, 16 Dec 1999 10:12:05 -0700
From: Steve Beeson <beeson@asu.edu>
Subject: RE: expansion of universe
Message-id: <8093ABAD9B81D211878200A0C9B406BAA7B76B@mainex3.asu.edu>

I believe the best way to think about the expansion of the universe is that
the space _between_ the galaxies (actually, between the clusters of
galaxies) is expanding. Individual motions of galaxies within a cluster,
and motions of stars within a galaxy, and motions of particles in an atom
'offset' (if you will) the expansion of the space between those objects.

A good analogy I've heard and used is that of the raisins in the plum
pudding (which was first used as an 'incorrect' model of the atom). The
raisins (galaxies) don't expand as the pudding bakes, the cake (space) does.
The Universe is just one big plum pudding at 350 F.

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