ultra high energy cosmic rays. these subatomic particles are going near the speed of light and have macroscopic energies. the question is where do they come from? the Greisen-Zatsepin-Kuzmin limit is basically the max distance they could have come from without interfering with something and slowing down but when we look there is nothing to suggest where they came from.

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

"it was a subatomic particle with macroscopic kinetic energy equal to that of a baseball (140 g) which is moving at about 27 m/s (60 mph)"
420ultimatesmokage Reviewed by 420ultimatesmokage on . one of the great mysteries of physics ultra high energy cosmic rays. these subatomic particles are going near the speed of light and have macroscopic energies. the question is where do they come from? the Greisen-Zatsepin-Kuzmin limit is basically the max distance they could have come from without interfering with something and slowing down but when we look there is nothing to suggest where they came from. Ultra-high-energy cosmic ray - Wikipedia, the free encyclopedia "it was a subatomic particle with macroscopic kinetic Rating: 5