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

As binary neutron stars spiral around each other to merge, their gravitational tidal forces distort each other's shape and ...

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.

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

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 ...

Billions of light years away in a remote part of the universe, two neutron stars – the ultradense remnants of dead stars – collided. The catastropic cosmic event sent light and particles, including a ...

Binary neutron star mergers emit gravitational waves followed by light. To fully exploit these observations and avoid missing key signals, speed is crucial. An interdisciplinary team of researchers ...

Almost 25,000 light-years away, two dead stars, each more massive than our Sun, but only 20 kilometers in diameter, orbit one another in less than five hours. This unusual pair of extreme objects, ...

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 research team is using astrophysical explosions to understand the mysterious forces at work in some of the smallest ...

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