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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 matter may be lurking at the galaxy’s center.
Each day, thunderstorms around the world produce about a thousand quick bursts of gamma rays, some of the highest-energy light naturally found on Earth. By merging records of events seen by NASA’s Fermi Gamma-ray Space Telescope with data from ground-based radar and lightning detectors, scientists have completed the most detailed analysis to date of the types of thunderstorms involved.
A perplexing gamma ray burst that seemed to move across a supermassive black hole faster than the speed of light, and in a recent paper scientists tried to figure out what was actually happening.
A new discovery offers clues to the creation and origin of gamma rays, the highest-energy form of radioactive waves known in the universe.
