JWST Reveals Earliest Galaxies Reshaping Cosmology

The James Webb Space Telescope has detected unusually mature galaxies dating to just 300 million years after the Big Bang, prompting cosmologists to reconsider models of early galaxy formation. The objects appear larger and more chemically evolved than predicted by the standard Lambda-CDM model, suggesting that star formation in the early universe may have been far more efficient than previously assumed. Research teams across the European Southern Observatory and Caltech are collaborating to verify the findings using gravitational lensing data.