The catastrophic collision of a black hole and a neutron star sent ripples across the universe. New analysis of those ripples could upend a major theory about how these extreme pairs form.

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

Scientists analyzing a gravitational-wave signal have discovered that a neutron star and black hole spiraled together on an ...

Scientists have uncovered the first robust evidence of a black hole and neutron star crashing together but orbiting in an ...

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 ...

Some of the universe’s densest objects can twist, stretch, and resonate in ways that challenge even the most seasoned ...

In 2020, astronomers discovered a violent cosmic event that has led them to rethink how extreme pairs of astronomical objects ...

Merging black holes and neutron stars have unusual oval orbits prior to colliding and merging, which challenge the laws of ...

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

Scientists believe this long stream of gas may have formed when several galaxies collided millions of years ago.

Researchers said this event, called GRB 230906A, is likely in a stream of gas located about 4.7 billion light-years from ...

Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of atomic nuclei, and they possess some of the strongest gravitational fields of ...