James Webb Telescope Unveils New Mysteries in Universe's Expansion

New data from the James Webb Space Telescope confirms previous Hubble Space Telescope measurements of the Universe's expansion rate, suggesting discrepancies with theoretical models may indicate new physics. The study, published in The Astrophysical Journal, supports the accuracy of Hubble's data, ruling out measurement errors and highlighting a tension between observed expansion rates and predictions from the standard LambdaCDM model. Theorists are now exploring explanations such as early dark energy or exotic particles to resolve this "Hubble tension."