While examining a nearby supernova with NASA's Fermi gamma-ray space telescope, an effort meant to discover how these stellar explosions ignite charged particles called cosmic rays, scientists have ...

A nearby supernova in 2023 offered astrophysicists an excellent opportunity to test ideas about how these types of explosions boost particles, called cosmic rays, to near light-speed. But surprisingly ...

In October 2022, astronomers were stunned by what was quickly dubbed the BOAT — the brightest-of-all-time gamma-ray burst (GRB). Now an international science team reports that data from NASA’s Fermi ...

July 25 (UPI) --Scientists have announced a never-before-seen energy peak that resulted from the largest gamma ray burst in history, NASA announced Thursday. The brightest-of-all-time gamma ray burst, ...

Scientists have been all aflutter since several space-based detectors picked up a powerful gamma-ray burst (GRB) in October 2022—a burst so energetic that astronomers nicknamed it the BOAT (Brightest ...

For more than a decade, NASA’s Fermi Gamma-ray Space Telescope has quietly mapped the high-energy sky, searching for subtle patterns in the cosmic glow. Now a new analysis of its data points to a ...

To commemorate a milestone anniversary for NASA’s Fermi spacecraft, the mission team has published an e-book called “Our High-Energy Universe: 15 Years with the Fermi Gamma-ray Space Telescope.” ...

For the first time ever, scientists using NASA’s Fermi Gamma-ray Space Telescope have found the source of a high-energy neutrino from outside our galaxy. This neutrino traveled 3.7 billion years at ...

The positions of the cataloged pulsars shown in a top-down view of the Milky Way. The red and orange symbols indicate millisecond pulsars, while the green and blue symbols indicate young, unrecycled ...

On Oct. 9, 2022, NASA’s Fermi Gamma-ray Space Telescope and Neil Gehrels Swift Observatory detected a high-energy blast of light from deep space. The light came from a powerful explosion called a ...

In the early 1930s, Swiss astronomer Fritz Zwicky observed galaxies in space moving faster than their mass should allow, prompting him to infer the presence of some invisible scaffolding—dark ...

"Fermi is the most sensitive gamma-ray telescope in orbit, so when it doesn’t detect an expected signal, scientists must explain the absence." When you purchase through links on our site, we may earn ...