NASA reported on Oct. 15, 2026, that researchers using the Chandra X-ray Observatory have found that a formation of radio waves resembling a treble clef is likely caused by an outburst from a supermassive black hole, followed by a collision of two galaxy clusters.

The image shown was dated Oct. 14, 2026, a day before the agency's report. Its credit line lists X-ray data from NASA/CXC/INAF-IRA/A. Botteon et al., infrared data from UKIDSS-GPS, radio data from ASTRON/LOFAR, and image processing by NASA/CXC/SAO/N. Wolk.

The finding is described by NASA as a likely origin rather than a confirmed one. Further details were said to be available in the agency's fuller account of the discovery.