James Webb Telescope Confirms Accelerated Universe Expansion Defies Current Physics

New data from Webb and Hubble telescopes strengthen evidence for a faster-than-expected expansion rate, challenging established cosmological models.

The James Webb Space Telescope (JWST) has corroborated Hubble's findings that the universe is expanding faster than theoretical models predict, intensifying the 'Hubble tension' debate.
The Hubble constant, which measures the universe's expansion rate, shows values of approximately 73 km/s/Mpc from observations, conflicting with theoretical predictions of 67–68 km/s/Mpc.
Researchers used three independent methods, including Cepheid variable stars, red giants, and carbon-rich stars, to confirm consistent measurements with less than 2% discrepancy between Webb and Hubble data.
The findings suggest that the mismatch is unlikely due to measurement errors and may point to new physics, such as early dark energy, exotic particles, or other unknown phenomena in the universe.
This research, published in *The Astrophysical Journal*, highlights the need to rethink the standard cosmological model and explore the mysterious roles of dark matter and dark energy, which comprise 96% of the universe.