Cosmic ray puzzle resolved as scientists link 'knee' formation to black holes
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Cosmic ray puzzle resolved as scientists link 'knee' formation to black holes

Milestone results released by the Large High Altitude Air Shower Observatory (LHAASO) on November 16 have solved a decades-old mystery about the cosmic ray energy spectrum—which shows a sharp decrease in cosmic rays above 3 PeV, giving it an unusual knee-like shape.