Ultra-high energy cosmic rays are energized by magnetic turbulence, not shock acceleration, according to new research.

The most powerful cosmic-ray electrons and positrons ever detected slamming into Earth's atmosphere carry energies so high they can only have come from relatively close by, new research has revealed.

An international team of astronomers, led by researchers from the Astronomical Observatory of the University of Warsaw, have identified a new class of cosmic X-ray sources. The findings have been ...

Even Bhuva said it's not a major concern for most people, which may be why cosmic rays are a little-known threat. It's just not something that most of us are likely to experience on a regular basis.