SMRTR Science & EngineeringNov 6, 2025Scientific American

Black Hole ‘Superflare’ Is the Strongest Ever Seen

SMRTR summary

Astronomers confirmed the most luminous black hole burst ever detected, a "superflare" over 10 trillion times brighter than the Sun that occurred 10 billion light years away. The record-breaking blast likely resulted from a black hole consuming a massive star at least 30 times the Sun's mass, with the star's destruction creating jets of light 40 times brighter than normal. Five years after first detection, the flare continues burning as the star remains incompletely devoured.

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