Researchers have detected an extremely energetic cosmic ray from an unknown source in the universe. The detection of a cosmic ray with such high energy is "exceedingly rare" and the latest discovery, ...

Nearly 100 years ago, scientists detected the first signs of cosmic rays — subatomic particles (mostly protons) that zip through space at nearly the speed of light. The most energetic cosmic rays hit ...

All biological amino acids on Earth appear exclusively in their left-handed form, but the reason underlying this observation is elusive. Recently, scientists uncovered new clues about the cosmic ...

The latest observations from Low Earth Orbit with the International Space Station provide further evidence of spectral hardening and softening of cosmic ray particles. The CALorimetric Electron ...

Recently an international team of astronomers traveled back in time to when our universe was just 1.8 billion years old. They did not go directly, of course, but settled for the next best thing: ...

The original version of this story appeared in Quanta Magazine. Of the 100 trillion neutrinos that pass through you every second, most come from the sun or Earth’s atmosphere. But a smattering of the ...