A team of physicists and astronomers at the University of Canterbury has found new evidence that challenges the existence of dark energy, a phenomenon thought to be responsible for the accelerating expansion of the universe. By analyzing supernovae light curves, they suggest that the universe is expanding in a more varied, “lumpier” way, eliminating the need for dark energy. According to Professor David Wiltshire, the findings provide strong evidence for the “timescape” model of cosmic expansion, which explains the observed acceleration as a consequence of gravitational time dilation and calibration errors rather than an accelerating universe. The researchers say that their work could settle the universe’s biggest mystery by the end of the decade, but further observations are needed to bolster support for the timescape model.
Source: https://ras.ac.uk/news-and-press/research-highlights/dark-energy-doesnt-exist-so-cant-be-pushing-lumpy-universe-apart