NEW YORK (AP) — A neutrino detector submerged in the Mediterranean Sea has sniffed out the most energetic ghost particle yet, scientists reported Wednesday. The newly detected neutrino is around 30 times more active than the previous recordholder. Scientists think it came from outside the Milky Way galaxy but its exact source remains a mystery.

Scientists have found the highest-energy cosmic neutrino called a "ghost particle" at the bottom of the Mediterranean Sea using a special telescope called KM3NeT.