Despite a new measurement, the neutron’s lifetime is still puzzling
![neutron lab experiment](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/05/050918_EC_neutron-lifetime_feat.jpg?fit=860%2C460&ssl=1)
LIFETIME ACHIEVEMENT To make a new measurement of the neutron’s lifetime, physicists confined neutrons within a chamber and counted the number that remained using an apparatus (shown) located at Los Alamos National Laboratory in New Mexico.
Courtesy Los Alamos National Lab