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

For the first time, a binary black hole merger, observed in November 2024, has been linked with a short gamma-ray burst (GRB), a phenomenon that was previously thought impossible. This unprecedented ...

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

The four gravitational wave observatories around the world have been busy lately, revealing hundreds of detections. These ...

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

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

(CNN) — Astronomers have detected a collision between two black holes in unprecedented detail, offering the clearest view yet into the nature of these cosmic oddities and confirming long-held ...

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

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 ...

In my January 23, 2026, “The Universe” column, I wrote about some of the biggest bangs the universe has to offer: exploding stars, hiccupping magnetars, stellar disruptions and colliding black holes.

Scientists have found the first strong evidence that a neutron star and a black hole merged while travelling in an oval-shaped orbit ...

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 ...