Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When ...

Astronomers analyzing the gravitational-wave event known as GW200105 report evidence that a black hole and neutron star spiraled into each other on an oval-shaped orbit, rather than the near-circular ...

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. The ...

We preselected all newsletters you had before unsubscribing.

Strange matter only occurs under very specific circumstances -- and astrophysicists are getting closer to understanding what ...

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 ...

Dr. Vicky Kalogera, the Daniel I. Linzer Distinguished University Professor in the Department of Physics and Astronomy at Northwestern University will give the 2026 Weinberg Memorial Lecture. The ...

“We got a rare glimpse into how destruction can be a catalyst for creation." The lightless behemoths are explored in new simulations of their interactions with extremely dense stars. A forgotten flare ...

A new analysis of the neutron star merger known as GW170817 has delivered the most precise measurement yet of the Hubble ...

An artist’s rendering of a black hole like the one in the center of our galaxy. While the black disk in the center is the ...