What if the brightest explosion in the Universe was heading straight toward Earth? Would humanity have time to prepare, or ...

In a single experiment, physicists have measured the "excess" emission of high-energy gamma rays from more than a dozen heavy ...

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

Add Yahoo as a preferred source to see more of our stories on Google. The orange dot at the center of this image represents a powerful explosion that repeated several times over one day. - A. Levan, A ...

New research has failed to rule out self-annihilating dark matter as the source of a gamma-ray emission radiating from the heart of the Milky Way.

Astronomers have performed very long baseline interferometry (VLBI) observations of a gamma-ray loud blazar known as TXS 2013+370. The observations, posted November 19 on the arXiv preprint server, ...

Thunderstorms host a rich variety of electrical discharges that span time-scales from microseconds to minutes and produce radiation extending from radio waves up to high-energy gamma rays. Intense ...

CAPE CANAVERAL, Fla. (AP) — Scientists have discovered a gamma ray explosion outside our galaxy that’s not only exceptionally powerful, but also long-lasting. What to know about earthquake early ...

When massive stars die, they explode, leaving behind supernova remnants. Given how common binary star systems are — more than half the stars in our galaxy have a companion — it stands to reason that ...

GRB 250702B was spotted in July. ESO / A. Levan, A. Martin-Carrillo et al. Astronomers have spotted a gamma-ray explosion unlike any they’ve seen before, with the help of multiple telescopes, ...

Scientists at Johns Hopkins may be closing in on dark matter’s elusive trail, uncovering a mysterious gamma ray glow at the heart of our galaxy that could signal unseen matter colliding — or perhaps ...