Summary:
- Researchers have detected the most energetic "ghost particle" ever observed, using a deep-sea telescope located in the Mediterranean Sea.
- The particle, known as a neutrino, had an energy of over 200 teraelectronvolts (TeV), making it one of the highest-energy neutrinos ever detected.
- This detection provides valuable insights into the most extreme environments in the universe, such as active galactic nuclei and gamma-ray bursts, which are believed to be the sources of these high-energy neutrinos.