From: Damien Broderick (thespike@earthlink.net)
Date: Thu Jan 09 2003 - 11:31:07 MST
http://www.nature.com/nsu/030106/030106-8.html
< Physicists are looking for small deviations from general relativity, in
the hope that it will give them a clue to how it can be reconciled with
quantum theory.
For example, if there were more than the four dimensions of space and time
that we are familiar with - as some theorists suggest - then gravity might
be able to 'speed up' by taking a short cut through them.
Knowing the speed of gravity helps to put limits on these possibilities. But
it's too early to draw definite conclusions >
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