This article examines the physical origin of cosmological redshift within the framework of the Theory of Absolute (ToA) and compares it with the interpretation adopted in standard ΛCDM cosmology based on general relativity. In ToA, the interpretation of cosmological redshift is based on local temporal relations associated with gravitational-field structure and on physical conditions occurring during photon emission, propagation, and detection. Within this approach, cosmological redshift is not interpreted as a direct consequence of global spatial expansion or spacetime geometry. Instead, the observed frequency shifts are related to local temporal relations and to the physical conditions encountered by photons during emission, propagation, and detection. The analysis emphasizes that redshift itself is a directly measurable observable, whereas cosmological distances, recession velocities, and large-scale dynamical interpretations are reconstructed quantities that depend on the adopted cosmological model. A comparison is presented between the geometric interpretation of redshift used in relativistic cosmology and the local-temporal interpretation considered within ToA. The two approaches are shown to rely on fundamentally different physical interpretations of photon propagation and cosmological reconstruction. The results highlight the role of local physical processes in cosmological observations and motivate further investigation of non-geometric interpretations of cosmological redshift.
Adam Marek Behr (Fri,) studied this question.