Story perspectives

Astronomers Detect Neutral Gas in 750-Myr-Old Galaxies

6/16/2026

Summary

Story summary

Assistant Professor Yoshinobu Fudamoto and Professor Masamune Oguri detected neutral gas in galaxies 750 million years after Big Bang using Large Millimeter/submillimeter Array (ALMA) and James Webb Space Telescope (JWST) to observe the [O I] 145 µm line.
A weak [N II] 205 µm line showed the emission came mainly from neutral gas, validating the study appearing in Astrophysical Journal June 15 2026 that the [O I] line is a probe.
The researchers will extend the survey with observatories.

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Story summary

Assistant Professor Yoshinobu Fudamoto and Professor Masamune Oguri detected neutral gas in galaxies 750 million years after Big Bang using Large Millimeter/submillimeter Array (ALMA) and James Webb Space Telescope (JWST) to observe the [O I] 145 µm line.
A weak [N II] 205 µm line showed the emission came mainly from neutral gas, validating the study appearing in Astrophysical Journal June 15 2026 that the [O I] line is a probe.
The researchers will extend the survey with observatories.