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Why Early Galaxies Shine So Bright: The Secret of Transparent Dust ⚡ экспресс

Original: "Stardust Galaxies at z>9: A Dust-Origin Transition Behind the Excess of UV-Bright Galaxies"
arXiv:2605.09829 · 2026-05-11 · CC BY 4.0 · ⏱ 1 min · Galaxies Cosmology
The JWST telescope revealed that dust in ancient galaxies barely blocks light — a discovery that reshapes our understanding of cosmic evolution.
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In the early universe, dust from stellar explosions was nearly transparent, like a faint haze, letting ultraviolet pass. This explains why the James Webb Telescope sees so many brilliant galaxies at the dawn of time — they shine through the mist rather than drowning in the smog of later dust.

🎯 Dust grains from supernovae are hundreds of times smaller than UV waves: light slips through them like water through a coarse sieve, meeting no resistance.

Scientists
Albert EinsteinFritz ZwickyVera RubinSubrahmanyan ChandrasekharEnrico FermiJames Jeans
Tags
cosmic dust supernova galaxy JWST
Laws
gravitational lensingvirial theoremChandrasekhar limitFermi accelerationJeans instabilitylaw of conservation of momentum
Original: arXiv:2605.09829 · CC BY 4.0 · bridge42worlds