Brighter Than 10 Trillion Suns: Record Black Hole Flare 10 Billion Light‑Years Away
Date: November 7, 2025 Key points What happened—and why this one is different A Caltech‑led team reports an extraordinary flare from the supermassive black hole in AGN J2245+3743, first seen rising dramatically in 2018 and now recognized as a record‑setter for both luminosity and distance. At peak, it shone with the light of ~10 trillion suns, unmistakably towering above the AGN’s usual variability. California Institute of Technology+1 The peer‑reviewed study, published November 4, 2025 in Nature Astronomy, quantifies just how extreme the event is: the source brightened by more than a factor of 40, radiating a cumulative ~10⁵⁴ ergs—on par