JWST finds early galaxies may be 4 times more massive than thought
Summary
JWST observations indicate that massive galaxies in the early universe contain many more small, faint stars than previous estimates captured. Accounting for those stars could raise their estimated masses by three to four times and may also imply that low-mass stars, and their planets, were more common shortly after the Big Bang.
The revised mass estimates deepen the problem of explaining how mature, massive galaxies formed so
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The finding could force a major revision of how quickly galaxies and stars formed after the Big Bang.