Neutrinos, some of nature’s weirdest fundamental particles, are nearly massless—emphasis on nearly. They were predicted to be completely massless, but experiments roughly 20 years ago found they ...

Physicists have taken one small-but-consequential step toward measuring the mass of an elusive "ghost particle" called a neutrino — an achievement that could poke a significant hole in the Standard ...

The maximum possible mass of a barely there particle has just gotten smaller. Subatomic particles called neutrinos are extremely lightweight. Now, scientists with the KATRIN experiment in Karlsruhe, ...

Humble neutrinos — electrically neutral particles that glide through the universe, unaffected by the forces of nature — have helped to shape the cosmos. They play a role in nuclear fusion, radioactive ...

A new measurement finds the universe's teensiest particles weigh no more than one-millionth the mass of an electron. Reading time 2 minutes Physicists have placed a new limit on how big the elusive ...

Neutrinos are very small, neutral subatomic particles that rarely interact with ordinary matter and are thus sometimes ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A big, electron-counting machine has indirectly turned up a measurement of the slipperiest known ...

Neutrinos and their small non-zero masses play a key role in cosmology and particle physics. The allowed range of the mass scale has now been narrowed down by the initial results of the international ...