Webb reveals the Universe’s first galaxies were a chaotic mess

Science DailyCenterEN 3 min read 100% complete October 30, 2025 at 08:14 AM

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Astronomers using the James Webb Space Telescope (JWST) have observed over 250 early galaxies from between 800 million and 1.5 billion years after the Big Bang. Researchers at the University of Cambridge found these galaxies were highly unstable, with clumps of gas and stars rather than smooth disks seen in mature galaxies today. The study, published in Monthly Notices of the Royal Astronomical Society, utilized JWST's NIRCam instrument to track gas movements within early galaxies, revealing intense star formation and gravitational forces caused significant turbulence. This contradicts previous findings suggesting well-ordered disks formed early on, aligning instead with theoretical models predicting a chaotic early universe transitioning towards order.

Key Topics & Entities

Sandro Tacchella 40% Kavli Institute for Cosmology ×250% Lola Danhaive ×360% University of Cambridge ×270% James Webb Space Telescope (JWST) ×480%

Keywords

galaxies 100% chaotic mess 90% early universe 90% james webb space telescope (jwst) 85% cosmic evolution 80% galactic stability 75% star formation 70% gas movement 65% nircam instrument 60% cosmic noon 40%

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galaxies chaotic mess early universe james webb space telescope (jwst)cosmic evolution galactic stability star formation gas movement nircam instrument cosmic noon

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