Deep beneath the ground in China, the massive JUNO neutrino observatory has delivered its first major scientific breakthrough, achieving one of the most precise measurements yet of how elusive neutrinos change as they travel. Using just 59 days of data, researchers sharply improved measurements of k ey neutrino properties, boosting confidence that JUNO can tackle one of particle physics' biggest mysteries: determining the true mass hierarchy of neutrinos. ...read more read less