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ALMA Detects Neutral Oxygen in Early Universe Galaxies

Original: Astronomers utilizing the Atacama Large Millimeter/submillimeter Array (ALMA) have successfully detected neutral oxygen

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected neutral oxygen emission in four galaxies dating to the epoch of reionization, roughly 700 to 800 million years after the Big Bang. The finding offers rare insight into the chemical conditions of the earliest galaxies and how elements formed in the first generations of stars spread through the young universe.

Why now: The detection reaches further back in cosmic time than previously possible, advancing understanding of early galaxy formation.

ALMAepoch of reionization

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Evidence

• Astronomers utilizing the Atacama Large Millimeter/submillimeter Array (ALMA) have successfully detected neutral oxygen emission in four galaxies existing during the epoch of reionization, approximately 700 to 800 million years after the Big Bang. This achievement provides a… · aishaahmed1994 · 3

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