Webb Telescope Resolves Decades-Long Debate on Universe's Expansion Rate

2025-05-31
Webb Telescope Resolves Decades-Long Debate on Universe's Expansion Rate

A decade-long debate over the rate of the universe's expansion may be nearing its end. Scientists at the University of Chicago, using data from the James Webb Space Telescope, have performed a new calculation of the Hubble constant, finding agreement with early universe observations and supporting the Standard Model of cosmology. Webb's superior resolution and sensitivity allowed for more precise measurements of galactic distances, leading to a more accurate calculation of the expansion rate. This research provides compelling evidence towards resolving a long-standing cosmological puzzle, and opens new avenues for investigating dark matter and dark energy.

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