Cosmic rays are particles from outer space that travel across the universe. They can be made by the sun, by other stars exploding, and even black holes. They move extremely fast, nearly the speed of ...

High-energy cosmic ray particles, particularly those exceeding 1 TeV, lose energy rapidly as they interact with light and magnetic fields. This makes their detection on Earth challenging and ...

A massive burst of gamma rays produced by the explosion of a star almost two billion light-years away was so powerful that it changed Earth’s atmosphere, according to scientists. Gamma rays are ...