NASA's Fermi Space Telescope has failed to see gamma rays from a nearby supernova that should be created when it generates the high-energy cosmic rays that bombard Earth in their trillions.

Deep within the Milky Way’s core, researchers have uncovered cold gas clouds racing through a superheated galactic wind.

Astronomers analyzing 13 years of data from NASA's Fermi Gamma-ray Space Telescope have found an unexpected and as yet unexplained feature outside of our galaxy.

Now an international science team reports that data from NASA's Fermi Gamma-ray Space Telescope reveals a feature never seen before.

The team combined 13 years of gamma ray data from NASA's Fermi Large Area Telescope to analyze the cosmic gamma-ray background.

Pulsars are some of the most extreme and fascinating objects in the universe, and NASA's Fermi Space Telescope has just unlocked a new way to study them.

The cosmos comes alive in an all-sky time-lapse movie made from 14 years of data acquired by NASA's Fermi Gamma-ray Space Telescope. Our sun, occasionally flaring into prominence, serenely traces ...

But surprisingly, NASA’s Fermi Gamma-ray Space Telescope detected none of the high-energy gamma-ray light those particles should produce.

When the BOAT first erupted in 2022, it saturated most of the space-based gamma-ray detectors, including the Fermi Space Telescope, making them unable to measure the most intense part of that blast.

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

Now an international science team reports that data from NASA's Fermi Gamma-ray Space Telescope reveals a feature never seen before.