Solid Tide Observations Confirm That the Gravitational Interaction Speed Is the Same as the Speed of Light

Abstract

The law of universal gravity does not contain time. It has been regarded as a theory of action of distance by mainstream physics which means gravity can be transmitted instantaneously. The special theory of relativity indicates that the speed of light is the upper limit of all physical effects. Scientists have been looking forward to finding ways to measure gravitational speed. November 2012, “Science Bulletin” published “by the solid tide found gravity at the speed of light transmission of observation evidence”, reported that Chinese scientists with gravity solid tide observation data, in the time domain analysis, obtained the conclusion that gravitational propagation at the speed of light. In this paper, from the aspects of the theory of gravity tide, calculation, and determination of celestial body position, it is pointed out that the theory of earth tide implies that the speed of gravity is the same as the speed of light. Since the observed values of the earth tide agree with the theoretical values, it can be concluded that the velocity of the gravitational interaction is the same as the speed of light. According to the long sequence data of the superconducting gravimeter in Wuhan station, the phase difference between the moon M2 and the sun S2 with respect to the theoretical value is close to zero, which is consistent with the results of the earth tide theory. Again, the conclusion that gravitation is transmitted at the speed of light is obtained. The normal astronomical operation of correction of optical annual aberrations from the sun and the moon position indicates logically that the velocity of gravity interaction must be the same as the speed of light.