Why Early Galaxies Shine So Bright: The Secret of Transparent Dust ⚡ экспресс
Scientists have figured out why the most distant galaxies seen by the James Webb Telescope appear so dazzling in ultraviolet. The secret lies in their stardust: after the first stars exploded, that dust was still light and clear, like morning mist that didn’t yet know how to truly hide the light. Could this transparency have opened a window to the universe’s infancy?
The JWST telescope has spotted a multitude of bright galaxies in the young universe. Their ultraviolet light was barely absorbed by cosmic dust — defying previous expectations. The secret is that in the cosmic dawn, dust was born in supernova explosions and was as transparent as a freshly cleaned window pane.
As galaxies age, dust grains clump together and grow, turning that clear screen into heavy curtains that smother light. That’s why ancient galaxies blaze so intensely — their light traveled freely through unclouded dust. Over time, the same dust becomes opaque, perfectly explaining observations without needing exotic theories.
🎯 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.