China's JUNO neutrino observatory publishes its first results
A giant detector buried 700 metres underground in China just delivered its first physics result. The JUNO observatory measured two key properties of neutrinos with the best precision in the world, beating decades of earlier experiments with only 59 days of data.
China's Jiangmen Underground Neutrino Observatory, or JUNO, published its first physics result in the journal Nature and landed the cover. Using 59 days of data from late 2025, the international collaboration measured two fundamental neutrino oscillation parameters with the best precision in the world, cutting the uncertainty by a factor of 1.6 compared with decades of previous experiments. JUNO is a 20,000 tonne spherical liquid detector watching antineutrinos from two nearby nuclear plants. The next goal is sorting neutrinos by mass, which scientists say could guide other experiments and shed light on how galaxies evolved.