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.

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

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 ...

How do you weigh a star? If two stars orbit each other, then we can determine their masses by their orbits. Since each star pulls gravitationally on the other, the size of their orbits and the speed ...

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

A: The quick answer to your question is yes, they can gain matter. However, only a small fraction of neutron stars can gain mass — those in binary systems, where mass is transferred from the companion ...

When it comes to weighty matters, quarks and gluons rule the universe, a new study confirms. One of the largest computational efforts to calculate the masses of protons and neutrons shows that the ...

When an old star dies, its core runs out of nuclear fuel to produce heat and pressure. It's the pressure that keeps the core from collapsing under its own weight. The gravity of large stars is so ...

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

Using a pioneering method, researchers have found a neutron star of about 2.3 Solar masses -- one of the most massive ever detected. Neutron stars (often called pulsars) are stellar remnants that have ...

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 ...