China builds huge underground transparent sphere to trap 'ghost particles'

Wang Yifang (L), chief scientist of the Jiangmen Underground Neutrino Observatory (JUNO) and head of the Institute of High Energy Physics (IHEP) of the CAS, talks with his colleague at an experiment hall in Jiangmen, south China's Guangdong Province, Oct. 10, 2024. China has constructed the world's largest transparent spherical detector 700 meters underground to capture elusive neutrinos, often dubbed "ghost particles," to unravel the secrets of the infinitesimally small and the infinitely vast in the universe. (Xinhua/Jin Liwang)