Reinterpreting Cosmological Redshift and Time Dilation: A Steady-State Universe Hypothesis with Evolving Time Rates

Hubble’s Law has long been interpreted as evidence of an expanding universe, where redshift scales linearly with distance. This view underpins the standard ΛCDM cosmology, which requires dark matter and dark energy but faces growing challenges: observations of too-large or too-old structures at high redshifts, inconsistencies in the Tolman surface brightness test, and the continued absence of direct evidence for the dark sector. Recently, the CERN Courier (2023) noted that no measurement shows a single object’s redshift increasing with time, highlighting a crucial missing piece in the expansion narrative. Meanwhile, Type Ia supernovae have proven to be remarkably precise cosmic “clocks,” demonstrating a clear time-dilation effect. The tired-light hypothesis also re-emerged in some analyses (e.g., Shamir 2024) but fails to explain supernova data. We propose an alternative: a steady-state (or static) universe in which time flow itself evolves. In this scenario, cosmic time ran more slowly in earlier epochs and accelerates toward the present, producing the observed redshift and the supernova time-dilation factor 1+z without requiring an expanding metric. This framework also naturally accommodates the Tolman test results, avoids invoking dark energy, and need not contradict relativity theory. Finally, we speculate on possible mechanisms—e.g., gravitational interactions and large-scale rotation outside our observable horizon—that could underlie this evolving time rate.