Alternative Perspective on the Hubble Tension

This work presents a conceptual and mathematical approach to the Hubble tension, proposing that the observed differences in cosmic expansion measurements arise from directional and reference-frame-dependent changes in the spacetime metric. The hypothesis explores asymmetric metric evolution, suggesting that light always follows the shortest path, which may lead to small deviations in observed redshifts. The paper includes a testable formulation using FLRW metric, Ricci tensor, and scalar curvature, providing an alternative perspective for cosmology research.