Ancient galaxy defies early-growth limits, seen 290 million years after the Big Bang
TL;DR Summary
JWST confirmed the galaxy JADES-GS-z14-0 at about z~14.3 (roughly 290 million years after the Big Bang), unusually large and bright for its age, and ALMA detected oxygen indicating heavy-element enrichment far earlier than models predicted—raising questions about how quickly the first galaxies assembled while not overturning the Big Bang framework.
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