A few days ago I wrote about how different measurements of the Hubble parameter gave results that didn't quite agree. It's not the only example of such an experimental disagreement. In fact, one of ...

The neutron is composed of two down quarks and an up quark and is stable under the strong and electromagnetic interactions. The weak interaction, however, can convert a down quark into an up quark ...

(Inside Science) — Exactly how long a neutron lives is currently under debate. Now researchers suggest this mystery could be solved if neutrons sometimes decay into particles of dark matter, the ...

For the first time, a research team from the University of Cologne has observed the electron capture decay of technetium-98, ...

This toy is radioactively cute—and able to explain how a neutral-faced neutron turns into a proton with a positive expression. Eliene Augenbraun is a multimedia science producer, formerly Nature ...