Furthest detection of oxygen in the early Universe

eso_eso2507a March 20th, 2025

Credit: ALMA (ESO/NAOJ/NRAO)/S. Carniani et al./S. Schouws et al/JWST: NASA, ESA, CSA, STScI, Brant Robertson (UC Santa Cruz), Ben Johnson (CfA), Sandro Tacchella (Cambridge), Phill Cargile (CfA)

This image shows the precise location in the night sky of the galaxy JADES-GS-z14-0, an extremely tiny dot in the Fornax constellation. As of today, this is the most distant confirmed galaxy we know of. Its light took 13.4 billion years to reach us and shows the conditions of the Universe when it was only 300 million years old. The inset of the image shows a close-up of this primordial galaxy as seen with the Atacama Large Millimeter/submillimeter Array (ALMA). The inset is overlaid on an image taken with the NASA/ESA/CSA James Webb Space Telescope. When two research teams studied this galaxy with ALMA, operated by ESO and its international partners, they uncovered something unexpected: the spectrum of the galaxy indicated the presence of oxygen. This is the most distant detection of oxygen ever, and it defies what we knew about galaxy formation in the early Universe. The presence of heavy elements like oxygen suggest that these early galaxies evolved more rapidly than we thought. It is like finding an adolescent where you would only expect babies. 

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso2507a/

Curator: European Southern Observatory, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License