Monday, July 28, 2014

Ultra-high-energy cosmic ray - Wikipedia, the free encyclopedia

Ultra-high-energy cosmic ray - Wikipedia, the free encyclopedia:



"In astroparticle physics, an ultra-high-energy cosmic ray (UHECR) is a cosmic ray particle with a kinetic energy greater than 1018 eV, far beyond both its rest mass and energies typical of other cosmic ray particles."



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