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Whoa! The JWST's Ancient Galaxies Are Much More Massive Than Thought

August 19, 2026
Whoa! The JWST's Ancient Galaxies Are Much More Massive Than Thought
By Evan Gough (https://ift.tt/X3Gu6Sd)

This JWST image was the first image released by the telescope. It shows the galaxy cluster SMACS 0723 and some of its members. One of the telescope's first discoveries was that early galaxies were already more massive than we can explain only a few hundred million years after the Big Bang. New research says that these theory-breaking galaxies were actually even more massive. Image Credit: NASA, ESA, CSA, STScI / Giménez-Arteaga et al. (2023), Peter Laursen (Cosmic Dawn Center)

When the JWST peered into the ancient Universe, it found surprisingly massive galaxies. These galaxies were so massive they challenged our understanding of how quickly galaxies can assemble. But new research says that multitudes of low-mass stars are hiding in these galaxies, and they're actually even more massive than we thought. When will it end?



August 19, 2026 at 08:41PM
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