Astronomers just watched a black hole twist spacetime

Astronomers have captured the first direct evidence of frame-dragging, where a spinning black hole twists spacetime around it like a whirlpool. By observing a star being torn apart by a supermassive black hole, researchers detected a 20-day wobbling pattern in X-ray and radio signals that confirms Einstein's century-old prediction about how massive rotating objects distort the fabric of space and time.