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 ...

MINNEAPOLIS / ST. PAUL–Floating 125,000 feet above the Antarctic ice sheet, a balloon-borne experiment is making an unprecendented second loop around the South Pole, probing the heavens for the origin ...

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, ...

An incredibly fast-moving particle from space recently arrived on Earth, and physicists are rushing to figure out what it is and where it came from. Called the Amaterasu particle, after the Shinto ...

An international team of astronomers has produced the first ever image of an astronomical object using high energy gamma rays, helping to solve a 100 year old mystery - an origin of cosmic rays. Their ...

This release is available in Japanese. We are constantly being bombarded by speedy, energetic, and yet unassuming, particles called cosmic rays. These charged particles (mostly protons), continuously ...

Earth is under constant bombardment by cosmic rays, showers of high-energy particles that blast our planet from all directions at near light speed. While this might sound like the precursor to a ...

pt. I. Discovery -- The nature of the radiation -- Particles produced by the cosmic rays -- The primary cosmic radiation -- Radio waves from the galaxy -- Extensive air showers -- The origin of cosmic ...

In the Ray's origin moment, reporter Happy Terrill embarks on a trip in an experimental "strato-balloon" which soars into the stratosphere and similarly to the Fantastic Four over 20 years later, gets ...