Study suggests fast-spinning black holes could split in two, though none observed

A new theoretical study examines whether rapidly spinning black holes might be capable of dividing into two smaller black holes. Scientists have traditionally held that black holes cannot split, largely because of entropy and the area theorem. The researchers argue that, under certain specific conditions, such a division could occur without breaking known physical laws. To describe this unusual scenario, they introduce a 'pair-of-pants' topology. The idea remains theoretical, as no such splitting has been observed.