
2025-08-27 21:12:10
The underground “Jiangmen Underground #Neutrino Observatory" (JUNO) near Jiangmen city in the Guangdong Province has successfully completed the filling of its 20,000 tons of liquid scintillator and begun data taking: https://www.prisma.uni-mainz.de/outreach/press-releases/juno-completed-liquid-filling-and-begins-data-taking/ - JUNO will tackle one of this decade’s major open questions in particle physics, the ordering of neutrino masses i.e. whether the third mass state (ν₃) is heavier than the second (ν₂).