Astronomers Investigate the Source of Cosmic Rays

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Astronomers have long attempted to locate the source of high-energy cosmic rays that hit the Earth's atmosphere. Now, researchers say that many of the rays can be traced to areas of the sky that contain nearby active galactic nuclei, thought to be powered by supermassive black holes devouring large amounts of matter.


Paul Mantsch, project manager, Pierre Auger Collaboration, Fermi National Accelerator Laboratory, Auger Southern Observatory in Malargue, Argentina



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