Astronomers have uncovered a baffling cosmic phenomenon: an extremely high-energy particle, dubbed the Amaterasu particle, ...

Scientists at CERN's ALICE detector are replicating conditions found during the Big Bang, attempting to get to the bottom of ...

Hidden valley models predict that high-energy particle collisions could give rise to specific signatures, namely SUEPs. In particle colliders, such as the one collecting data for the CMS ...

In tackling the excess problem, the team wrote that ... is the initial collision in air showers—when the high-energy cosmic ray particle first interacts with a nucleus in the atmosphere.