fitz wrote:

Why we have Gravity

A correct theory of gravity will show us these four (4) things:
1. It will show us why gravity also acts like acceleration (principle
of equvalence).
2. It will show us the actual cause of gravity.
3. It will show us why gravitational mass and inertial mass are
identical.
4. It will show us the speed of gravitational attraction.

Newton said gravity was acting at a much faster speed than Einstein.

Well, the average running speed of a human is around 10 mph. Sprints, the
record is under 30 mph. I don't know how athletic Einstein was so we could
use a figure of 3 mph walking speed. Nice to set some lower boundaries
on the SoG (speed of gravity).

Which one of them is right?

http://www.amperefitz.com/why.we.have.gravity.htm
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