gamma rays

By measuring the mass of a nearby dwarf galaxy called Triangulum II, researchers may have found the highest concentration of dark matter in any known galaxy.

A newly discovered dwarf galaxy orbiting the Milky Way appears to be radiating gamma rays—a sign that dark ...

Each day, thunderstorms around the world produce about a thousand quick bursts of gamma rays, some of the ...

A perplexing gamma ray burst that seemed to move across a supermassive black hole faster than the speed ...

A new discovery offers clues to the creation and origin of gamma rays, the highest-energy form of radioactive ...