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

Gold and other heavy elements are born in some of the universe’s most violent events—but scientists still struggle to understand the nuclear steps that create them. Now, nuclear physicists have ...

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

Astronomers analyzing the gravitational-wave signal from a 2020 collision between a black hole and a neutron star report ...

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.

Because the nuclei involved are extremely rare and short-lived, scientists usually rely on theoretical models rather than ...

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

A fresh analysis of gravitational wave data from a 2020 collision between a black hole and a neutron star has produced the first measured evidence of an eccentric, oval-shaped orbit in this type of ...

The final dance of a black hole and a neutron star before their ultimate merger has been revealed, according to new research.

A new theoretical framework shows that tidal forces in inspiraling neutron star pairs can be described through oscillation modes, opening a new path to studying ultra-dense matter using gravitational ...

The light did not fade the way it was supposed to. After blazing into view about a billion light-years from Earth, the ...

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