Hubble Tension and Observed Predictions of Universal Expansion

The Hubble tension, a significant discrepancy between the Hubble constant values derived from cosmic microwave background measurements and local observations, challenges the standard model of cosmology. This report shows how the theory of universal expansion predicts the Hubble tension and many other observations. By calculating an effective expansion rate as required by the theory, the predicted local Hubble constant aligns closely with observed values from Cepheid‐calibrated supernovae. The implication is that the Hubble constant varies spatially with mass density, contrasting with the standard model’s assumption of homogeneity. These findings offer a plausible and simple resolution to the Hubble tension and provide new insights into cosmic expansion. Universal expansion predicts other phenomena that have been observed and explained by general relativity or that are not satisfactorily explained.