Particle Physics

A major new neutrino experiment is nearing completion

The JUNO experiment will study the ways of the electrically neutral subatomic particles

A sphere inside a large pit is covered in white sheeting with tubes entering a hole in the top.

The Jiangmen Underground Neutrino Observatory (pictured) will study the subatomic particles when it starts up in summer 2025.

Enrico Sacchetti

By Emily Conover

Physicists are putting the finishing touches on the Jiangmen Underground Neutrino Observatory, or JUNO, which will delve into the secretive ways of neutrinos, a family of extremely lightweight subatomic particles with no electric charge, and their antiparticle partners, antineutrinos.

Set to start taking data in summer 2025, JUNO aims to determine which