'Fingerprints' of Black Hole's Event Horizon Detected For First Time

Researchers say they detected the first gravitational-wave “fingerprints” of a black hole’s event horizon by analyzing the final moments of the powerful GW250114 merger. The findings support Einstein’s general relativity and may eventually help probe frame dragging and quantum fluctuations near black holes. Phys.org reports: For the new research published in Nature, an international team of researchers analyzed data from the strongest gravitational wave ever recorded, known as GW250114, detected by the LIGO observatory in January 2025.