A black hole deep in the cosmos, some 5 billion light-years away, could be the most massive ever found. The galaxy SDSS J1148+1930 harbors a behemoth, around 36.3 billion times the mass of our Sun, ...

For decades, scientists have known black holes often come in pairs. These binary systems feature a black hole locked in a gravitational dance with a nearby object—usually a star, neutron star, or ...

A "black hole triple" system has been discovered for the first time, scientists announced. Black holes have only been spotted on their own or in a binary until this discovery, with a single star, ...

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Astronomers have accidentally discovered the first-known " black hole triple" system, containing a dark void orbited by two stars. The unique configuration of this triad hints that the black hole was ...