So what are ultracold neutrons? Peter Geltenbort: The “thermal neutrons” produced by a research reactor such as ILL have energies of a few hundredths of an electron volt. On average they travel at ...

Matching the neutron stars' cooling rates to their equation of state could help scientists figure out a quantum theory of gravity. When you purchase through links on our site, we may earn an affiliate ...

Neutron star mergers are a treasure trove for new physics signals, with implications for determining the true nature of dark matter, according to physicists. Neutron star mergers are a treasure trove ...

"We have good reason to suspect that new physics beyond the standard model might be lurking just around the corner." When you purchase through links on our site, we may earn an affiliate commission.

Neutron stars are the densest observable objects in the universe. A new Finnish Centre of Excellence investigates them with a combination of astrophysics, particle physics, nuclear physics and ...

About 20 years ago, a physicist had an idea to reveal insights about a fundamental but enigmatic force at work in some of the most extreme environments in the universe. These environments include an ...

Nuclear puzzle: In the nucleus, neutrons can be stable, but free neutrons decay after a short period. Exactly how short is in dispute because experiments on neutrons stored in bottles and neutrons in ...

On August 17th, both the light and the gravitational wave signals from inspiraling-and-merging neutron stars reached Earth, where both were detected, for the first time, by humans. The inspiral phase ...

Physicists have found the strongest sign yet of a fabled four of a kind. For six decades, researchers have hunted for clusters of four neutrons called tetraneutrons. But evidence for their existence ...