A blazar is an extraordinarily bright object with a supermassive black hole at its core. Some of the matter falling into the ...

NASA’s Fermi Gamma-ray Space Telescope "detected none of the high-energy gamma-ray light" from a nearby supernova. NASA ...

A mysterious, high-energy glow from gamma-rays in the Milky Way's center is reigniting the debate: dark matter or a hidden ...

Milestone results released by the Large High Altitude Air Shower Observatory (LHAASO) on November 16 have solved a ...

Chinese researchers have identified black holes as the likely source of the high-energy component of the cosmic-ray “knee.” Milestone findings released on November 16 by the Large High Altitude Air Sh ...

For over a decade, the Fermi Gamma-Ray Space Telescope has mapped a mysterious excess of gamma-ray light in the inner regions ...

COLUMBIA, S.C. (WIS) - Gamma-ray bursts are a relatively new discovery in space science. The first burst was discovered in ...

Astronomers have long puzzled over the cause of a mysterious “glow” of very high energy gamma radiation emanating from the ...

A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all ...

Ground-based telescopes detect these emissions, but an intriguing issue arises when the high-energy gamma rays scatter off background light, creating cascades of electron-positron pairs. Surprisingly, ...