The most energetic "ghost particle" neutrino ever detected may have been blasted at Earth by blazars, black hole engines that ...

A particle detected in 2023 at the bottom of the Mediterranean Sea may have originated from a cosmic particle accelerator ...

Cosmic rays seen at Earth show a wide range of particle energies, from 107 electron-volts (eV) to more than 1020 eV, the latter being about the same as the kinetic energy of a 450 gram football ...

There appear to be too many gamma rays coming from the sun. New higher-energy measurements reveal that this excess continues for a bit, then disappears — a cutoff that could help clarify what’s going ...