The universe is still speeding up, but nobody knows why
Science Daily · 2026-08-29
New research confirms the universe is still expanding at an accelerating rate, countering a recent study that suggested a cosmic slowdown. An international team of astrophysicists, including Nobel Laureates Adam Riess and Brian Schmidt, published their findings in *Monthly Notices of the Royal Astronomical Society* on August 29, 2026. The new analysis supports the long-standing understanding that dark energy continues to drive this accelerating expansion. Lead author Dr. Phil Wiseman from the University of Southampton stated that previously accepted measurements were accurate, and the current understanding of the universe's fate remains robust. The team identified issues with the earlier South Korean study, specifically in its estimation of exploding stars' ages and its failure to properly account for the mass of host galaxies, which are standard cosmological practices. Professor Riess emphasized that extraordinary claims require careful testing, and when supernovae data is properly calibrated, evidence for cosmic acceleration remains consistent. This new work reinforces the mystery surrounding dark energy, allowing scientists to refocus on understanding its nature rather than questioning its existence.