Mysterious ultrahigh-energy cosmic ray puzzles astronomers – Physics World physicsworld.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from physicsworld.com Daily Mail and Mail on Sunday newspapers.
Second only to the Oh-My-God particle, the newly dubbed Amaterasu particle deepens the mystery of the origin, propagation and particle physics of rare, ultra-high-energy cosmic rays. In 1991, the University of Utah Fly’s Eye experiment detected the highest-energy cosmic ray ever observed. Later d