Witnessing the onset of reionization through Lyman-α emission at redshift 13

Nature, Published online: 26 March 2025; doi:10.1038/s41586-025-08779-5Spectroscopy from the JWST Advanced Deep Extragalactic Survey of a galaxy at redshift 13 shows a singular, bright emission line identified as Lyman-α, suggesting the onset of reionization only 330 Myr after the Big Bang.

Mar 26, 2025 - 17:26
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Witnessing the onset of reionization through Lyman-α emission at redshift 13

Nature, Published online: 26 March 2025; doi:10.1038/s41586-025-08779-5Spectroscopy from the JWST Advanced Deep Extragalactic Survey of a galaxy at redshift 13 shows a singular, bright emission line identified as Lyman-α, suggesting the onset of reionization only 330 Myr after the Big Bang.