Colliding black holes may have created a surprising flare of light
Researchers expect only gravitational waves to be spawned in these sorts of smashups
![Black hole light collision illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/06/062420_EC_black-hole-light_feat.jpg?fit=1028%2C579&ssl=1)
Two black holes (illustrated at bottom right) may have set off fireworks when they merged within a disk of gas surrounding a much bigger black hole (top left). Researchers spotted a flare of light in addition to gravitational waves from the collision.
R. Hurt/Caltech (IPAC)