Category
page 1Cosmic rays
cosmic radiation
high-speed, i.e. high-energy particle, mainly originating in outer space, outside the Solar system
background radiation
level of ionizing radiation present in the natural environment
Oh-My-God particle
unexpectedly ultra-high-energy cosmic ray
air shower
shower of particles from a high energy cosmic ray hitting Earth's atmosphere
Greisen–Zatsepin–Kuzmin limit
theoretical upper limit on the energy of cosmic ray protons
ultra-high-energy cosmic ray
cosmic-ray particle with a kinetic energy greater than 1 EeV (10¹⁸ eV)
Cosmic ray spallation
Natural reactions causing nucleosynthesis
Amaterasu particle
cosmic particle
solar energetic particles
High-energy particles from the Sun
Forbush decrease
rapid decrease in galactic cosmic ray intensity following a coronal mass ejection
Fermi acceleration
acceleration phenomenon of oft-reflected charged particles
cosmic-ray observatory
installation built to detect high-energy-particles coming from space
Cosmic ray visual phenomena
Diffuse extragalactic background radiation
Photon field that fills our universe
Gaisser–Hillas function
function in physics to determine particle density