A spinning black hole in the constellation Scorpius has created a stable dent in the fabric of spacetime, scientists say.

The dent is the sort of thing predicted by Albert Einstein’s theory of general relativity. It affects the movement of matter falling into the black hole.

The spacetime-dent is invisible, but scientists deduced its existence after detecting two X-ray frequencies from the black hole that were identical to emissions noted nine years ago. The finding will allow scientists to calculate the black hole’s spin, a crucial measurement necessary for describing the object’s behavior.
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Scientists think that gas particles moving in warped spacetime near the black hole exhibit two types of motions, each giving rise to a unique frequency. One motion is the orbital motion of the gas as it goes around the black hole. This produces the 450 Hz frequency. The lower 300 Hz frequency is caused by the gas wobbling slightly due to the spacetime deformations.