JWST finds early galaxies may be 4 times more massive than thought

Astronomers using JWST have discovered that massive early galaxies contain far more small, faint stars than expected. That hidden population could make some of these galaxies three to four times more massive than previous estimates. The finding makes it even harder to explain how enormous, mature galaxies formed so soon after the Big Bang [1].

Sources

1. sciencedaily.com · JWST finds early galaxies may be 4 times more massive than thought Aug 22, 2026

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