> I was just reading up on Einstein's theory of relativity and then did
> some other research on the matter. So here's my question: Does gravity
> propagate at the speed of light or is it (could it be) instantaneous
> (or faster than the speed of light)?

Typing

          +"Does Gravity Travel at the Speed of Light?"

into Gargoyle gave me 88 answers (surprisingly few) and a look at the
last page showed that the refs were still on subject and even seemed
to contain the whole search text (which is certainly not always the
case with G' searches) , so there's quite a lot of material out there
to draw from.

_________________


While I'm here - relevant recent stuff from elsewhere here -

1. dark matter is used to explain slowing down of expected expansion,
not the opposite.

2. The behaviour of radial arms of some galaxies suggest that if our
gravitational theories are correct then there are "halos" of dark
matter in well defined locations in the outer areas of  the arms.
AFAIK this is not universally the case for all galaxies, so a theory
that suggests that what looks like dark matter is really just broken
gravitational theory (which I also have suggested here from time to
time here in the past ) seems to suggest that the proper theory of
gravity is a complex and non linear one.

For standard planetary systems to work you require the inverse square
law to work, with an exponent of 2.00000000000000000000... many.
Failing this by a very very very small amount leads to planets leaving
stage right or left depending, and on other fun things happening.,


         R
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