James Webb Space Telescope looks back in time, finds our ancient universe wasn't as pure as we thought
The James Webb Space Telescope ( JWST ) has discovered that ancient galaxies were already producing and spreading heavy elements, challenging the notion that our early universe was purely hydrogen and helium. This finding suggests that metal-enriched baryon cycling occurred before the midpoint of cosmic reionization, indicating the universe's chemical evolution began earlier than previously believed.
The James Webb Space Telescope ( JWST ) has discovered that ancient galaxies were already producing and spreading heavy elements, challenging the notion that our early universe was purely hydrogen and helium. This finding suggests that metal-enriched baryon cycling occurred before the midpoint of cosmic reionization, indicating the universe's chemical evolution began earlier than previously believed.
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- Space — James Webb Space Telescope looks back in time, finds our ancient universe wasn't as pure as we thought
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