An illustration of two stellar-mass black holes merging in the accretion disk of an active galactic nucleus. (Shu-Rui Zhang) ...

A neutron star and black hole (GW200105) were detected merging along an unusual oval orbit, challenging theories about how ...

A newly analyzed gravitational-wave event has revealed something unexpected about one of the Universe’s most violent encounters. Scientists have found the first strong evidence that a black hole and a ...

A neutron star and black hole were detected merging along an unusual oval orbit, challenging long-held theories about how these systems form.

The signal indicated that the event occurred extremely far away. The masses of the objects involved also caught scientists’ attention.

Despite years of debate and follow-up studies, an odd streak of cosmic light still defies a final explanation. Is it a giant ...

Scientists analyzing a gravitational-wave signal have discovered that a neutron star and black hole spiraled together on an oval-shaped orbit just before merging. This unusual motion, detected in the ...

An international team from China and Italy has reported a possible cosmic encore to the landmark 2017 multi-messenger ...

The final dance of a black hole and a neutron star before their ultimate merger has been revealed, according to new research.

The catastrophic collision of a black hole and a neutron star sent ripples across the universe. New analysis of those ripples ...

An international team of scientists, including Northwestern University astrophysicists, has detected 128 new ...

Scientists have uncovered the first robust evidence of a black hole and neutron star crashing together but orbiting in an oval path rather than a perfect circle just before they merged. This discovery ...