NUMI (Neutrinos at the Main Injector)

NUMI (Neutrinos at the Main Injector) is a research facility at Fermilab designed to study neutrinos—tiny, nearly massless particles that rarely interact with matter. It produces intense beams of neutrinos by accelerating protons-shaped particles at high speed and smashing them into targets, creating secondary particles that decay into neutrinos. These neutrinos then travel through the Earth to detectors located miles away, allowing scientists to study their properties, such as how they change or oscillate between types. NUMI's experiments help advance our understanding of fundamental physics and the universe’s building blocks.