Nature, Published online: 10 June 2026; doi:10. 1038/s41586-026-10538-z The first data of the Jiangmen Underground Neutrino Observatory deliver high-precision neutrino oscillation parameters, improving measurements and demonstrating readiness to determine neutrino mass ordering.

Source: [Nature](https://www.nature.com/articles/s41586-026-10538-z)

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