In the Cygnus star formation region of the Milky Way, there is a giant ultra-high-energy gamma ray bubble structure. The universe is nearly ten million times the size of the solar system and with an energy exceeding 1 billion electron volts.
The "bubble" was recently discovered by China's large scientific facility High Altitude Cosmic Ray Observatory. Academician Cao Zhen explains the latest major discoveries and research progress of "Raso" in China News Service interview on February 26.