A world first! China's "Raso" discovered and certified the origin of cosmic rays exceeding 1 billion electron volts. In the Cygnus star formation region of the Milky Way, there is a giant ultra-high-energy gamma ray bubble structure.
It is a cosmic "bubble" nearly ten million times the size of the solar system and with an energy of over 100 billion electrons. The Cosmic Ray Observatory (English abbreviation LHAASO, Chinese nickname "Lasuo") discovered and confirmed that it is an object that originates cosmic rays.