Fresh corroboration of the perplexing observation that the universe is expanding more rapidly than expected has scientists pondering the cause - perhaps some unknown factor involving the mysterious cosmic components dark energy and dark matter.

The James Webb Space Telescope has confirmed the universe's expansion rate, suggesting unknown cosmic factors drive its faster-than-expected expansion.

For years, scientists have been troubled by an unusual feature of our universe. It appears to be expanding faster today than it did in the past

New observations from the James Webb Space Telescope have reinforced the Hubble tension, a discrepancy between different measurements of the universe's expansion rate. Scientists, using Cepheid variable stars,