SpaceFar-off galaxies are firing rare high-energy cosmic rays at us The highest energy particles in the universe hit Earth very rarely, so it took 10 years of data to pinpoint their origin. They’re coming from galaxies far, far away News
SpaceNeutrino no-show deepens cosmic ray mystery The failure of ghostly subatomic messengers called neutrinos to show up at an Antarctic telescope disproves a major astrophysical theory News