Energetic particles that pop briefly into existence when cosmic rays hit Earth’s atmosphere could help assess hidden damage ...

Supernova remnants, pulsars, and active galactic nuclei are known to emit charged particles and gamma rays with energy levels ...

Using a decade’s worth of data from the H.E.S.S. telescopes in Namibia, they’ve observed a sharp kink in the energy spectrum ...

Scientists have a problem with cosmic rays—they produce too many muons at the Earth's surface. Cascades of muons are ...

The 14th annual meeting on “Thunderstorms and Elementary Particle Acceleration” was organized from October 14 to 17 by the ...

Scientists at the HESS observatory in Namibia have found the most energetic cosmic rays ever detected, reaching up to 40 ...

Scientists have a problem with cosmic rays—they produce too many muons at the Earth's surface. Cascades of muons are byproducts of high-energy cosmic rays as they collide with nuclei in the ...

The High Energy Stereoscopic System is a ground-based gamma-ray telescope in the highlands of Namibia and sensitive in the ...

High-energy particles, known as cosmic rays, provide a window into some of the most extreme environments in the universe.

Astrophysicists have detected the most energetic electrons ever recorded raining down on Earth. With trillions of times the ...