SPACE - Researchers a Step Closer to Finding Cosmic Ray Origins

The origin of cosmic rays in the universe has confounded scientists for decades. But a study by researchers using data from the IceCube Neutrino Observatory at the South Pole reveals new information that may help unravel the longstanding mystery of exactly how and where these "rays" (they are actually high-energy particles) are produced

http://www.sciencedaily.com/releases/2013/08/130830091613.ht