For decades, scientists have been trying to solve a mystery: Where do high-energy cosmic rays come from? These charged particles travel from outer space to Earth, but their origins remain unknown. Now ...

High-energy cosmic rays, 10 million times more powerful than particles accelerated in Earth's strongest atom smasher, may ...

CAPE CANAVERAL, Fla. (AP) — Scientists have discovered a gamma ray explosion outside our galaxy that’s not only exceptionally powerful, but also long-lasting. Bill Posey, longtime congressman for the ...

The LHAASO observatory has detected gamma rays above 100 TeV from a gamma-ray binary for the first time, challenging current ...

A dead star accelerates protons to extreme speeds, shedding light on the origin of the most energetic cosmic rays.

Using various telescopes, an international team of astronomers has performed multi-wavelength observations of a recently ...

A team of astronomers have observed an explosion in the universe unlike any ever witnessed before. The gamma-ray bursts from outside the Milky Way galaxy repeated several times over the course of a ...

Astronomers have detected a gamma-ray burst (GRB) like none other. GRB 250702B was longer than any ever observed and repeated ...

Solar physicists say they have found a key source of intense gamma rays unleashed when Earth's nearest star produces its most violent eruptions. In findings published in Nature Astronomy, scientists ...