A New Way to Touch the Most Violent Gravity in the Universe
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Sizheng Ma already knew what he was looking for before he went looking. He and his colleagues had spent months working out, on paper, what a very particular twist of spacetime should sound like once it reached Earth as a gravitational wave. Then they turned to the loudest black hole collision LIGO has ever recorded, captured on 14 January 2025, and started hunting through the signal for that exact wrinkle. It was there.
What they found is, in a sense, the imprint of a black hole’s outermos
What they found is, in a sense, the imprint of a black hole’s outermos
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