Scientists Continue to Trace the Origin of the Mysterious “Amaterasu” Cosmic Ray Particle

The Amaterasu particle was detected in 2021 by the Telescope Array experiment in the U.S. It is the second-highest-energy cosmic ray ever observed, carrying around 40 million times more energy than particles accelerated at the Large Hadron Collider. Such particles are exceedingly rare and thought to originate in some of the most extreme environments in the universe.