“This Is a Real Gift for Physicists”: A Black Hole Just Twisted Spacetime—and Proved Einstein Right Again

“This is a Real Gift for Physicists”: A Black Hole Just Twisted Spacetime—and Proved Einstein Right Again

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Astronomers discover spacetime drag around a supermassive black hole — as predicted by Einstein

A star’s fatal brush with a supermassive black hole can light up a quiet galaxy. When gravity shreds the star, its gas spirals inward and briefly glows. Astronomers call these flares tidal disruption events, or TDEs. They unfold over months or years, letting you watch black holes feed and, at times, fire jets of matter into space. One event, known as AT2020afhd, has now delivered an unusually clear view of a predicted effect from general relativ…