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upmufa (702569) writes "As we approach the 100-year anniversary of the discovery of cosmic rays, the origin of cosmic rays is still not known. Two remarkable results in the study of cosmic ray origin came out recently. The ATIC experiment, conducted on a balloon over Antarctica, has reported an excessof 300 — 850 GeV electrons which is not understood. Possible explanations include dark matter or a nearby cosmic-ray accelerator. Also the Milagro experiment in New Mexico has reported on two cosmic rayhot spots at 10 TeV which could be due to a nearby accelerator or some unknown magnetic effect. Both observations are distinct from the Auger AGN report because they are at lower energy and are probing Galactic cosmic rays. Interestingly, the Geminga pulsar has been floated as the source of both observations." Link to Original Source