The black holes were found hiding in the center of the galaxy merger known as UGC 4211. These actively accreting – or growing – black holes are the closest separation black hole binary pair to be ...

Researchers have discovered a supermassive black hole binary system, one of only two known such systems.

Black holes are regions of space where gravity is so strong that not even light can escape from their vicinity. Binary black holes make it twice as hard to find.

Supermassive black hole binary emits unexpected flares Their orbit periodically takes them through a cloud of gas, triggering flares.

Some black hole pairs roll around each other in wobbly, egg-shaped orbits that could hold clues about their origins, gravitational wave measurements suggest.

Scientists have uncovered the existence of a binary star system close to the black hole near the center of the Milky Way galaxy.

GW190814’s gravitational waves suggest a hidden supermassive black hole nearby. The finding reshapes how binary black holes may form. Binary black holes are already among the universe’s most ...

The research team noticed that if a binary black hole were merging near a third compact object, it would undergo orbital motion influenced by the third object’s gravity.

Astronomers discovered a 'black widow binary' -- a rapidly spinning neutron star circling and slowly consuming a smaller companion star. Named ZTF J1406+1222, the pair has the shortest orbital ...

The binary black holes in the universe are already astonishing enough, but researchers from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences have made a ...