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NASA detected a mysterious X-Ray signal from space. Astronomers have no explanation

Few days ago, NASA announced that astronomers have detected a mysterious X-Ray signal coming from the Perseus Cluster, located 240 million light-years away from Earth. The unidentified signal is a strong X-ray discharge and it was discovered using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. According to a theory, it may have been produced by the decomposition of sterile neutrinos, a type of particle that's considered a strong...