New research questions the leading model of the universe's expansion, suggesting dark energy may not be needed

A new study published in the scientific journal Monthly Notices of the Royal Astronomical Society suggests that the universe's expansion may not be accelerating uniformly in all directions, challenging the long-held belief in dark energy as a driving force. The research, which analyzed the Pantheon+ supernova catalog, found that a correction for the age of progenitor stars reveals that more distant supernovae appear dimmer than they actually are, creating a false impression of accelerated expansion. If confirmed, these findings could necessitate a fundamental change to cosmological models and potentially resolve the 'Hubble tension'.