(One particular cosmic ray, detected in 1991 and nicknamed the “Oh-My-God particle,” was going very nearly the speed of light when it smacked into a detector in Utah.) That there are “hot spots” of ...

For years, astronomers have searched for the origins of ultra-high-energy cosmic rays ... of light-years away, they would gradually slow down due to interactions with cosmic microwave background ...

Bright flashes of light filled the night sky of Karachi in the early hours of Monday as people spotted and shared visuals of meteors in the sky. Local social media was flooded with images and ...

Scientists at the Max Planck Institute for Extraterrestrial Physics have published the cosmological results of the first X-ray sky survey of the Western Galactic Hemisphere by the eRosita space ...