Astronomers have caught a cosmic explosion doing something it was never supposed to do, firing off three powerful gamma-ray ...

Jan. 11 (UPI) --Astronomers studying gamma rays said they have found a mysterious phenomenon just outside of the Milky Way. Researchers published the findings in study Wednesday in The Astrophysical ...

A single gamma-ray burst has forced astronomers to redraw their mental map of how the most violent explosions in the universe ...

Scientists have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about ten trillion times the energy ...

NASA sent a retired Cold War spy plane on a storm-chasing mission, and it discovered that big thunderstorms are very radioactive. Large thunderstorms produce so much gamma radiation that the clouds ...

The researchers think that infrared light particles (photons) from the poles of the pulsar are boosted to gamma-ray energies (blue) by fast electrons. Scientists using the H.E.S.S. observatory in ...