From: J. G. Locke (lockejg@redshift.com)
Date: Fri Dec 17 1999 - 05:39:16 PST
From: "J. G. Locke" <lockejg@redshift.com> Subject: RE: Expanding Universe Date: Fri, 17 Dec 1999 05:39:16 -0800 Message-ID: <000001bf4894$1d1a8460$4c32c8d8@daddysmachine>
||
|| Subject: RE: expansion of universe
|| From: "Steve Beeson" <beeson@asu.edu>
|| Date: Thu, 16 Dec 1999 10:12:05 -0700
||
|| 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.
||
Where is the boundary between the part of the universe that is expanding
space between raisins) and the part of the universe (raisin) that is not
expanding? What is the fundamental difference between the two regions that
causes this difference in behavior?
John
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