An underground detector in China unveils its first major findings about mysterious ghost particles

China’s JUNO detector released its first major results, publishing precise measurements of how neutrinos change “flavor” as they travel.
The spherical detector sits 700 meters underground and watches antineutrinos from nearby nuclear plants — remember, neutrinos stream through your body by the trillions every second.
The new data haven’t settled which neutrino is heaviest, but show JUNO can tease apart tiny differences; complementary big experiments in Japan and the U.S. are coming soon.