Fascinating to be able to confirm the existence of a blazar by a single neutrino
https://www.sciencealert.com/high-e...rays-pinpointed-to-source-blazar-txs-0506-056
Finally, scientists have found the source for a high-energy cosmic neutrino coming from outside our galaxy.
The so-called mysterious "ghost particle", detected on 22 September 2017, travelled 4 billion light-years to reach us, originating from an extremely energetic object called a blazar.
https://www.sciencealert.com/high-e...rays-pinpointed-to-source-blazar-txs-0506-056