![A supermassive black hole at the center of the Milky Way may produce neutrinos.](/content/images/size/w1304/2023/04/supermassive-black-hole.jpg)
International hunt detects ghostly neutrino from a galaxy far away
An international observatory traced a high-energy cosmic neutrino back to its origin about 4 billion light years away.
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An international observatory traced a high-energy cosmic neutrino back to its origin about 4 billion light years away.