LHAASO in China's Sichuan begins scientific observation of very high energy cosmic rays

Photo taken on April 26, 2019 shows Cao Zhen from the China Academy of Sciences, chief scientist of the Large High Altitude Air Shower Observatory (LHAASO), launching scientific observation and introducing the research data during the ceremony of LHAASO Scientific Observation and unveiling of Tianfu Cosmic Ray Research Center in Chengdu City, southwest China's Sichuan Province. The LHAASO recently began scientific observation of very high energy cosmic rays as it launched operation of its first set of detectors. (Xinhua/Jin Liwang)