Three new physics experiments could revamp the standard model
Physicists build giant machines to study tiny particles
![researcher inside KATRIN](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/09/092918_physics_main.jpg?fit=860%2C460&ssl=1)
MASSIVE MACHINES A researcher stands in the cavernous spectrometer of KATRIN, an experiment in Germany to measure the mass of particles called neutrinos.
Michael Zacher