Faint, distant galaxies spotted by the James Webb Space Telescope are beginning to reshape how scientists understand the high ...

Cosmic rays are made primarily of protons with a few electrons sprinkled in, and they can reach energies even higher than ...

A study published in Physical Review Letters by a research team at Penn State University offers a potential explanation. Led by Kohta Murase, a professor of physics and astronomy, the investigators ...

Scientists may have finally uncovered the mystery behind ultra-high-energy cosmic rays — the most powerful particles known in the universe. A team from NTNU suggests that colossal winds from ...

Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...

The pairs should then scatter on the cosmic microwave background to generate lower-energy gamma rays—yet these have not been captured by gamma-ray space telescopes, such as the Fermi satellite. Up to ...

George Smoot, who shared the Nobel Prize for Physics in 2006 for his studies of the cosmic microwave background (CMB), died on 18 September at the age of 80. Smoot’s work on the blackbody form and ...

When we gaze up at the night sky, we often marvel at the twinkling stars, distant planets, and expansive galaxies. Yet, beyond the visible spectrum lies a more mysterious aspect of the cosmos—cosmic ...

Future missions to the Moon, Mars, and beyond will expose astronauts to levels of radiation far greater than those ...

British-French supersonic jet Concorde flew so close to the edge of space that it had to carry a special radiation meter to ...