Black Hole Binaries Revealed by Gravitational Lensing

Astronomers have proposed a new way to detect supermassive black hole binaries—by watching how they bend and magnify starlight. As two black holes orbit each other, their combined gravity acts as a rotating gravitational lens, producing predictable, repeating flashes from distant background stars.These light signals could reveal the pair’s masses and orbital motion long before they merge. Using wide-field sky surveys, researchers aim to turn black holes into natural telescopes, opening a new window into the evolution of the universe’s most powerful duos.Thank you for listening to Bedtime Astronomy — your guide to the cosmos. New episodes on space exploration, NASA missions & the latest astronomy breakthroughs.This episode includes AI-generated content.