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Phys.org

Football / Phys.org

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Radio galaxy from 12.5 billion years ago may be most powerful ever found

Astronomers have confirmed a powerful radio galaxy from nearly 12.5 billion years ago. The source, TXS 2354+015, was originally identified as a high-redshift candidate from its characteristic drop in optical light, and follow-up spectroscopy placed it at a redshift of 4.946. Their paper was posted to the arXiv preprint server on Sept. 23.

8 Oct 2026 1:10 am