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Science and Nature
Kobunsha Shinsho / / Invisible Particle 「 Neutrino 」 The international research team including Japan has discovered that the source of the high-energy type is a galaxy with a huge black hole. The black hole 4,000,000,000 light years away also emits high-energy gamma rays and is considered to be the source of cosmic rays. This paper introduces the forefront of high-energy neutrino observation research that has the potential to open a new field in astronomy.