The IceCube neutrino detector has allowed researchers to resolve a debate about what types of particles make up ...

Muons can also be formed in cosmic-ray spallation, wherein a cosmic ray enters Earth's atmosphere and collides with a molecule or atom, smashing it apart into a shower of subatomic particles ...

Researchers recently detected an "ultra-high-energy" cosmic ray, which is the most powerful since the famous "Oh My God" particle was detected in 1991. They have no idea where it came from.

An ultra-high-energy cosmic ray carries tens of millions of times more energy than any human-made particle accelerator such as the Large Hadron Collider, the most powerful accelerator ever built ...

Physicists have recreated the mechanism behind cosmic ray acceleration in a lab for the first time using ultracold atoms and a device no bigger than a human hair. Scientists have achieved a major brea ...

It's the most energetic cosmic ray detected since 1991, when astronomers detected the so-called "Oh-My-God' particle, with energies of an even more impressive 320 EeV.

In 1991, physicists spotted a cosmic ray with so much energy it warranted an ‘OMG.’ Now that energetic particle has a new companion.

The abundances of heavy nuclei in the low energy primary cosmic ray flux can be accounted for by the co-existence of two components, one of which has undergone nuclear spallation reactions. The ...

A cosmic-ray exposure age is obtained from the measurement of one radioactive and one stable spallation isotope produced in a meteorite by cosmic rays.