For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

A team of astronomers has detected a burst of very-high-energy gamma rays that was created over five billion years ago – the oldest such burst ever detected. On their journey to Earth, the gamma rays ...

Using four 12-meter telescopes, researchers analyzed a decade’s worth of data with cutting-edge algorithms designed to extract cosmic ray electrons from background noise.

There’s no one way for documentary fare to acknowledge Earth Day, but the programs generally fall into one or more of four distinct buckets in regard to the health of the planet: Depressing ...

Crab Nebula blasts Earth with highest-energy photons ever recorded The super energetic gamma rays originated thousands of light-years away, and scientists still aren't exactly sure what generated ...

NASA has confirmed that on October 9, 2022, our solar system was struck by a gamma-ray burst originating 1.9 billion light-years away that was brighter than any since the beginning of human ...

How do electrons close to Earth reach almost the speed of light? Date: February 2, 2021 Source: GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre Summary: In the Van Allen radiation belts ...

Gamma-ray burst charged Earth’s ionosphere from 2 billion light-years away The brightest supernova ever detected altered the outer layers of Earth's atmosphere.

Gamma-ray bursts, or GRBs, are intense blasts of gamma rays—the highest-energy form of light—that typically last from a fraction of a second to a few minutes in length.

Gamma rays that flash briefly in Earth’s atmosphere during lightning storms are much more frequent and powerful than previously thought, a new study reveals. The rays – high-energy photons ...

Gamma ray bursts (GRBs) are among the most energetic explosions since the Big Bang – and now astronomers have detected the most powerful one yet. A beam of high-energy radiation up to 18 times ...

Measurements taken at Earth's neighbors, Mars and Venus, show the battle between high-energy cosmic rays from beyond the solar system and the influence of the sun in the inner solar system.