Astronomers analyzing the gravitational-wave event known as GW200105 report evidence that a black hole and neutron star ...

In 2020, astronomers discovered a violent cosmic event that has led them to rethink how extreme pairs of astronomical objects form. These pairs are capable of producing powerful cosmic collisions.

Physicists at Goethe University in Frankfurt, Germany, have used supercomputer simulations to predict a specific ...

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 ...

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 ...

Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of ...

Astronomers have tracked a powerful blast of radiation back to its source, finding a neutron star collision within colliding galaxies.

A powerful "gamma-ray burst" has been seen exploding from merging neutron stars hidden within a previously unknown mini-galaxy leftover from an ancient cosmic crash. The "collision within a collision" ...

Scientists may soon see inside neutron stars, potentially revealing a state of matter, quark-gluon plasma, last seen immediately after the Big Bang.

Breakthrough discovery provides new clues about how these celestial bodies - that push the known laws of physics to their limits - find each other.

Artist’s impression of an eccentric neutron star–black hole binary. The neutron star’s path is shown in blue and the black hole’s motion in orange as the two objects orbit each other. The eccentricity ...

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