Neutrino astronomers set biggest traps ever for messengers from cosmic accelerators
A country-size array of radio antennas could trace ultra–high-energy particles back to supernovae and black holes.
In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC prepares to start its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.
