Abstract

The notions of absolute time and motion seem needed to describe processes that occur in a gravity environment. Einstein realized that the equations of Special Relativity Theory (SRT) could not be valid in a gravity environment, because SRT is based on the concepts of relative time and motion. So he generalized from the SRT concept of space-time and metric tensor to develop the General Relativity Theory (GRT), which describes motions of objects in a space-time that is curved in comparison to absolute space-time. If these same absolute concepts are incorporated into the framework of SRT, the result is what I call Doppler Relativity Theory (DRT). The equations of DRT are valid in all environments.