(G * m1 * m2) / (d2) = 300000kps/186000mps
One other thing is that light is pulled along by gravity and can be bent or sucked in by heavy gravitational bodies, therefore the force of gravity is much more powerful than light, which would lead me too believe that gravity must have an immeasurable speed, for instance a black hole must have a faster gravitational speed than light, otherwise light would not be sucked in and would continue as a constant, but basically the pull of a black hole has to be faster than light.
So from what I know of physics it simply is not possible to gauge gravity’s speed.
Imagine the universe like a big road that goes forever outward, light is being pulled along by the gravity that is expanding with the universe, so in essence it is gravity that is giving light emissions their speed, gravity can vary at different points in the universe and light can do nothing but react to whatever gravity dictates, giving light different velocities.
The same principle applies to warp theories, use gravity too beat light and you attain warp speed, i.e make a ship defy gravity and you defy light, then once done move the ship at a faster than light velocity, which is made easier because gravity in no longer an issue to be dealt with, don’t do it and you will be crushed by gravity.
ADM