A formation of radio waves looks remarkably like a treble clef in this Oct. 14, 2026, image from NASA’s Chandra X-Ray Observatory. Researchers used Chandra to find that the Treble Clef is likely caused by an outburst from a supermassive black hole, followed by a collision of two galaxy clusters.

Source: [NASA](https://www.nasa.gov/image-article/chandra-finds-possible-origin-of-treble-clef-waves/)

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