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

Astronomers confirmed the radio galaxy TXS 2354+015 at a redshift of 4.946, meaning its light traveled nearly 12.5 billion years to reach Earth. Follow-up spectroscopy verified the high-redshift candidate, with the paper posted to arXiv on Sept. 23.

• TXS 2354+015 sits at a redshift of 4.946
• Its light traveled nearly 12.5 billion years to Earth
• The candidate was flagged by a drop in optical light
• The paper was posted to arXiv on Sept. 23