Source: Gadgets 360 [India]
“Astronomers have seen the orbit of a star wobbling around a black hole — a spectacular dance in the cosmos that serves as one of the very few direct confirmations of Einstein’s general theory of relativity made over 100 years ago. The result, derived from periodic changes in X-ray and radio emissions in a tidal disruption event, is essentially a new window onto the workings of a spinning black hole that warps space and time around it. According to the study, researchers analysing the tidal disruption event AT2020afhd noticed that both the swirling disk of stellar debris and the black hole’s powerful jets were wobbling in unison, repeating roughly every 20 days. This motion matches a phenomenon called frame-dragging, where a rotating black hole literally drags spacetime around with it — an effect first described by Einstein and later quantified by Josef Lense and Hans Thirring.” (12/12/25)