This illustration of the region surrounding our Solar System shows the estimated location of the two-million-year-old supernova, lying close to the galactic magnetic field, that may have been the source for some high-energy cosmic rays observed today. Credit: Michael Kachelrieß, Norwegian University of Science and Technology (NTNU)
High-energy protons, nuclei, and other particles are constantly showering down on Earth’s atmosphere from space, but the origins of these cosmic rays is unknown. One possibility is that the cosmic rays come from supernovae, although the evidence for this claim is limited...
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