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May 18, 2023

James Webb’s ‘too massive’ galaxies may be even more massive

Posted by in category: space

The first results from the James Webb Space Telescope have hinted at galaxies so early and so massive that they are in tension with our understanding of the formation of structure in the universe. Various explanations have been proposed that may alleviate this tension. But now a new study from the Cosmic Dawn Center suggests an effect which has never before been studied at such early epochs, indicating that the galaxies may be even more massive.

If you have been following the first results from the James Webb Space Telescope, you have probably heard about the paramount issue with the observations of the earliest galaxies: They are too big.

From a few days after the release of the first images, and repeatedly through the coming months, new reports of ever-more distant galaxies appeared. Disturbingly, several of the galaxies seemed to be “too massive.”

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