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James Webb Telescope Uncovers Record-Breaking Galaxy MoM-z14

8/18/2025

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Summary

Story summary

The James Webb Space Telescope discovered MoM-z14, a compact galaxy formed 280 million years after the Big Bang, with a redshift of 14.44, the highest recorded.
MoM-z14 has a mass comparable to the Small Magellanic Cloud and shows a tenfold increase in star formation over the past 4 million years.
The absence of neutral gas from the early universe suggests MoM-z14 is reionized, challenging current cosmological models.

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Story summary

The James Webb Space Telescope discovered MoM-z14, a compact galaxy formed 280 million years after the Big Bang, with a redshift of 14.44, the highest recorded.
MoM-z14 has a mass comparable to the Small Magellanic Cloud and shows a tenfold increase in star formation over the past 4 million years.
The absence of neutral gas from the early universe suggests MoM-z14 is reionized, challenging current cosmological models.