Gamma-ray
Researchers Discover Antimatter in Thunderstorms
“These signals are the first direct evidence that thunderstorms make antimatter particle beams,” said Michael Briggs, a university researcher whose team,…
Spacecraft catches thunderstorms hurling antimatter into space
Scientists think the antimatter particles were formed in a terrestrial gamma-ray flash (TGF), a brief burst produced inside thunderstorms and shown to be…
Fermi's Large Area Telescope Sees Surprising Flares in Crab Nebula
“We were dumbfounded,” said Roger Blandford, who directs the Kavli Institute for Particle Astrophysics and Cosmology, jointly located at the Department of…
Fermi Detects Gamma-rays from Exploding Nova
A nova is a sudden, rapid increase in the brightness of a star. The explosion occurs when a white dwarf ignites in an enormous thermonuclear explosion. The…
NASA's Swift Catches 500th Gamma-ray Burst
Swift primarily studies gamma-ray bursts (GRBs) — the biggest and most mysterious explosions in the cosmos. On April 13, the spacecraft's “burst-o-meter”…
NASA's Fermi probes 'dragons' of the gamma-ray sky
Now, astronomers using NASA's Fermi Gamma-ray Space Telescope find themselves in the same situation as cartographers of old. A new study of the ever-present…