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Article
An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV
Cosmic ray positrons are known to be produced in interactions in the interstellar medium. As well as originating from this 'secondary source', positrons might also be generated in primary sources such as pulsa...
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Article
Dual origins of light flashes seen in space
Light flashes are unusual visual phenomena that are observed in space and are caused by the interaction of energetic cosmic-ray particles with the human visual system. Using data gathered on board the Mir spac...