The mysterious Amaterasu particle may not be a proton at all. New research suggests that some of the most extreme cosmic rays ...

New observations from Jupiter have now provided direct confirmation of the process.

Juno's findings provide fresh evidence for how and where cosmic rays form.

Our most powerful particle accelerators mimic near-light speeds of cosmic particles. But no upgrade may be capable of ...

Scientists have discovered that ultraheavy atomic nuclei could explain some of the highest-energy cosmic rays ever observed.

The most energetic particles in the universe – ultrahigh-energy cosmic rays – likely come from supermassive black holes in the hearts of nearby active galaxies, says a study by scientists from nearly ...

“Amaterasu” is the second most energetic cosmic astroparticle ever recorded (discovered in 2021 by the Telescope Array). *Current analyses show that the particle could originate from a nearby galaxy.

Illustration of an array of ground-based detectors to characterize a cosmic ray shower. When high-energy cosmic particles strike the atmosphere, they produce a cascade of particles. By building a ...

Earth is under constant bombardment by cosmic rays, showers of high-energy particles that blast our planet from all directions at near light speed. While this might sound like the precursor to a ...