A cosmic explosion that announced itself with a modest flash of gamma rays went on to produce one of the brightest afterglows ...

A gamma-ray burst (GRB) that has confounded astronomers is one of the brightest cosmic light shows in the past 20 years.

An artist illustration of a gamma-ray burst. (NASA/Swift/Cruz deWilde) Gamma-ray bursts (GRBs) are among the most energetic ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Fermi Gamma-ray Space Telescope discovered that thunderstorms on Earth produce antimatter. These storms also produce gamma ...

Researchers report a novel HPGe-BGO pair spectrometer with compact geometry optimized for the ELIADE array at ELI-NP, tested ...

The international CTAO completed four 23 m gamma-ray telescopes on La Palma, Spain. The LST array is designed to detect 20 GeV to multi-TeV gamma rays from multiple directions. Researchers expect the ...

In a single experiment, physicists have measured the "excess" emission of high-energy gamma rays from more than a dozen heavy, unstable atomic nuclei. Mapping the gamma-ray emissions of so many ...

In general, pulsars are highly magnetized, rotating neutron stars emitting a beam of electromagnetic radiation, and the most rapidly rotating ones (with rotation periods below 30 milliseconds) are ...

A gamma-ray spectrometer developed by a team of scientists and engineers at Lawrence Livermore National Laboratory (LLNL) is ...