The motion of massless “object” and the physical essence and motion law of light

In this paper, the vacuum absolute static reference system is established by analyzing the motion law of massless “object.” Through the understanding of the physical nature of light, this paper reveals three basic laws of motion of light: First, light always moves in a uniform straight line, independent of the motion of the light source. Second, the speed of light propagation in vacuum is constant relative to the absolute reference system of vacuum. Third, the speed of light propagation in the medium remains constant relative to the inertial frame of the medium. Based on this, we have successfully explained the phenomenon of Michelson‐Morley experiment, Fizeau experiment, and light aberration phenomenon that have long troubled the academic community. Finally, we prove that the two basic assumptions on which special relativity is based are wrong, so the Lorentz transformation and its series of inferences, as the core content of special relativity, are not tenable.