of only about 1 × 10⁻⁵. In other words, a minuscule fraction of the rotational energy is converted into observable gamma rays. This mismatch raises questions about particle acceleration mechanisms within the magnetospheres of ultra‑fast millisecond...

magnetic fields deflect charged cosmic rays, compelling researchers to rely on secondary signatures like high‑energy gamma rays. Multi‑Observatory Campaign Uncovers the Source’s Identity Initial detections of LHAASO J1912+1014u emerged from...

Astronomers suggest distant binary Cygnus X-3 may power the Cygnus Bubble’s highest‑energy gamma rays, challenging the usual link to nearby Cygnus X and OB2. A fresh analysis zeroes in on gamma‑ray photons above 400 tera‑electronvolts, proposing that...

A new geometric method using gamma‑ray burst echoes shows sections of the Mil Way are far farther than decades‑old maps indicated. A team of astronomers has delivered one of the most accurate distance determinations to the Milky Way’s far‑flung spiral...

Way’s central halo, a point emphasized by the study’s authors. Detecting this signal entails searching for a surplus of gamma rays above the background measured by the Fermi Gamma‑ray Space Telescope. Any statistically significant excess aligned with...

Astronomers observed a star’s first X‑ray flash and, within an hour, its explosion 500 million light‑years away. On March 21, 2026, an X‑ray burst recorded by the Einstein Probe marked the emergence of a supernova roughly 500 million light‑years from...

Astronomers detect first magnetic signature from a gamma-ray burst, revealing the environment around one of the universe’s most powerful explosions. A team of astronomers has captured the magnetic imprint surrounding a gamma‑ray burst afterglow for the...

Scientists reexamined a mysterious signal from the Milky Way’s crowded core, uncovering evidence that revives a previously disputed explanation. A fresh machine‑learning investigation has reignited the discussion over the diffuse gamma‑ray glow that...

begins full-scale, routine operations. Harnessing the Atmosphere as a Particle Detector Rather than looking directly for gamma rays, these instruments utilize the Earth’s atmosphere as a massive detection medium. When high-energy cosmic gamma rays...

Observatory on La Palma, Spain, where they serve as vital tools for deep-space monitoring. The data confirmed that the gamma rays reached Earth after an 8-billion-year transit. This observation is particularly significant because it captures the...

field of low-energy radiation composed of photons emitted by stars and galaxies throughout cosmic time. As high-energy gamma rays from distant blazars traverse the universe, they occasionally collide with these background photons. These interactions...

Psyche’s spectrometer at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. “As expected, we didn’t detect gamma rays from Mars, but we put the instrument through its paces, and it performed excellently.” The magnetometer captured the...

voids of space allow any minute differences in velocity to accumulate into measurable timing delays. Very-high-energy gamma rays from sources such as gamma-ray bursts, pulsars, and active galactic nuclei are the ideal subjects for this research....

More than two decades after its launch, NASA’s Swift observatory is losing altitude and faces a critical deadline. The agency is preparing an unprecedented rescue effort – a newly built spacecraft will rendezvous with Swift, lift it to a safer orbit,...

NASA launches a pioneering mission to rescue the Swift telescope and showcase next‑gen robotic satellite servicing. NASA has lifted off a pioneering project that could reshape how we maintain satellites while safeguarding one of the most productive...

of particles emerges from above and below the black hole. Collisions within the jet produce high-energy photons such as gamma rays. A flare from the blazar results in an additional burst of gamma rays and neutrinos.NASA’s Goddard Space Flight Center...

These enormous structures rise tens of thousands of light years above and below the plane of the Milky Way. They glow in gamma rays and have sharp, well-defined edges, which makes them hard to ignore. What caused them is still debated. Some scientists...

the black hole, they inevitably strike gas and dust, triggering a cascade of secondary particles that emit high-energy gamma rays. By mapping the spectrum of these rays, astronomers hope to distinguish the unique fingerprint of the Penrose process from...

Astronomers are baffled by a mysterious cosmic explosion that refused to fade, defying our current understanding of how these short-lived bursts behave. On July 4, 2025, astronomers recorded an extraordinary cosmic explosion that challenges our...

layers of the ionosphere comparable to that of a major solar flare. By ionizing atoms and molecules upon impact, the gamma rays essentially “electrified” the upper reaches of our atmosphere, demonstrating that a source billions of light-years away can...