The Ghosts of Neutrinos: Unraveling the Mysteries of the Universe's Most Elusive Particle In 1930, Wolfgang Pauli proposed a solution to the puzzle of "missing energy" in radioactive beta decay.
His idea was radical: a tiny particle with no mass or charge carried away the missing energy, dubbed the "ghostly" neutrino.
Physicists Clyde Cowan and Frederick Reines attempted to detect these particles at the Savannah River Plant in South Carolina in the 1950s.