Seeing Across the Universe
Date: 1993 - 1999
I read in the Paper today that scientists in Hawaii have discovered
something interesting THREE FOURTHS the way across the universe. How can
scientists see 3/4 the way across the universe? Since we look back in time as we
look out into space, and since we would eventually see back to the Big Bang in w hich all of the matter
was in a singularity in the 'center' of the universe, and since we would see
this in all directions, does it not follow that the center of the universe is
everywhere in a previous space/time. Conversely, does it not then follow that by going out in all
directions from the center you would eventually come to the edge of the universe
which would be EVERYWHERE in the present space/time? What I am getting to is
that the statement in the paper leads one to believe that we can see back past t he center and toward
the opposite 'edge'. I am surprised that astronomers would use such a Euclidian
statement. The geometry of the universe that we observe is inconsistent with a
Euclidian model with the center in the middle of a sphere and the edge at the su rface of the
sphere. A more proper model would be a space/time 'sphere' with the center
representing the surface of the sphere in a previous time and the center of the
sphere representing the edge of the universe in the present space time. This mod el puts any observer at
the edge of the universe looking back toward the center which which is
consistent with our observations.
You seem to be generally correct, except that what you read in the
paper is not what astronomers say, but what semi-literate reporters report. The
"horizon" approaches the "beginning of time". Everything may become clearer if
you read Steve Weinberg's delightful little book, "The First Three Minutes".
In an expanding universe with a finite age, we can only see a small
part of the universe. ( Hopefully there's more ! ).
The statement in the report referred to 3/4 of the size of the visible universe.
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Update: June 2012