Scientists find universe expands 10% faster than standard model predicts
Updated
Updated · The Wall Street Journal · May 7
Scientists find universe expands 10% faster than standard model predicts
8 articles · Updated · The Wall Street Journal · May 7
An international team reported in Astronomy and Astrophysics that a galaxy 3 million light-years away recedes at 46 miles per second.
Researchers said the most precise measurement yet suggests something is missing from cosmology’s standard model, with dark matter or dark energy possible explanations.
Because expansion rates help estimate the universe’s age and fate, the result also clouds predictions that it will end in a distant heat death.
Our entire theory of the universe is cracking. Does this signal the dawn of a revolutionary new physics?
Will the universe end in a silent freeze or a fiery collapse? New data has completely upended our predictions.
In April 2026, the H0 Distance Network Collaboration achieved a groundbreaking 1% precision measurement of the Hubble constant at 73.50 ± 0.81 km/s/Mpc, confirming the Hubble tension as a real physical phenomenon. This tension reveals that the standard ΛCDM model cannot fully explain the Universe's expansion history. Observations at intermediate distances support the higher local expansion rate, challenging existing theories. To address this, cosmologists propose Early Dark Energy, which not only reconciles the tension but also explains the unexpectedly massive early galaxies observed by JWST. The tension also impacts our understanding of cosmic fate, galaxy formation timelines, and fundamental cosmological principles, motivating future missions like NASA's Roman Space Telescope to explore dark energy and the Universe’s evolution.