The already tiny neutrino’s maximum possible mass has shrunk even further
The KATRIN experiment finds the ethereal particle has a mass less than 0.8 electron volts
![scientists working on the KATRIN experiment](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/04/042021_ec_katrin_feat.jpg?fit=1030%2C580&ssl=1)
The KATRIN experiment (pictured) helps to determine the maximum possible mass of the neutrino by studying electrons emitted in radioactive decays of tritium, a form of hydrogen.
KATRIN collaboration