Deep beneath the mountains of China, the JUNO observatory has achieved its first major milestone in the study of neutrinos—some of the universe’s most elusive particles.

Early results confirm the detector’s remarkable precision and open the door to answering one of physics’ biggest questions: how much do neutrinos actually weigh? As scientists push closer to the answer, they may uncover clues about the fundamental nature of matter and the origins of the universe itself.

This episode includes AI-generated content.