AI Summary

Astronomers using the James Webb Space Telescope discovered that several of the largest galaxies in the early universe contain a much larger number of small stars than previously thought. This hidden stellar population suggests those ancient galaxies may be up to four times more massive than earlier estimates indicated. The finding was made by an international team that included researchers from Penn State and was published in Nature Astronomy. The result adds to a growing challenge for theories about how the first galaxies formed and evolved.

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