Observatory for detecting cosmic rays begins scientific observation in China's Sichuan

Aerial photo taken on April 27, 2019 shows the construction site of the Large High Altitude Air Shower Observatory (LHAASO) in Daocheng County, southwest China's Sichuan Province. An observatory for detecting cosmic rays in southwest China's Sichuan Province recently began scientific observation as it launched operation of its first set of detectors. The project, known as Large High Altitude Air Shower Observatory (LHAASO), is located in the mountains of the eastern Qinghai-Tibet Plateau at an altitude of 4,410 meters. (Xinhua/Jin Liwang)