An observatory for detecting cosmic rays is being built in Sichuan Province. XINHUA PHOTOSICHUAN: A cosmic ray observatory in Southwest China's Sichuan Province has found the highest energy photons within the observable range of human beings and the findings may help unravel the "mystery of the century" regarding the origin of cosmic rays, scientists said on Monday. The observatory has recorded the highest energy photon of 1.4 Peta electron volts (PeV). This is the highest energy level ever observed, changing people's traditional understanding of the Milky Way. In 2019, human beings detected the first celestial body with ultra-high energy gamma-ray radiation.

Source: Manila Times May 20, 2021 12:54 UTC