Scientists who are trying to determine the speed of gravity equate it
to being the same as the speed of light according to Einstein's theory
of relativity. Does that necessarily mean that gravity has to be
measured in miles or kilometers? Gravity isn't an accelerated photon
such as light therefore can it be measured in the same manner? I know
the moon and the sun have a direct impact on the ocean tides, if it
were a total eclipse, then would the tides go down canceling out the
gravitational pull of the sun. If not, then is the only way of
measuring gravity constant to the earth's gravity?
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