Fermi Gamma-ray Space Telescope
Fermi's Decade of Gamma-ray Discoveries
Fermi's Decade of Gamma-ray Discoveries

What is Fermi?

General Dynamics C4 Systems - Artist Concept of Fermi The Universe is home to numerous exotic and beautiful phenomena, some of which can generate almost inconceivable amounts of energy. Supermassive black holes, merging neutron stars, streams of hot gas moving close to the speed of light ... these are but a few of the marvels that generate gamma-ray radiation, the most energetic form of radiation, billions of times more energetic than the type of light visible to our eyes. What is happening to produce this much energy? What happens to the surrounding environment near these phenomena? How will studying these energetic objects add to our understanding of the very nature of the Universe and how it behaves?

The Fermi Gamma-ray Space Telescope, formerly GLAST, is opening this high-energy world to exploration and helping us answer these questions. With Fermi, astronomers at long last have a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds. Physicists are able to study subatomic particles at energies far greater than those seen in ground-based particle accelerators. And cosmologists are gaining valuable information about the birth and early evolution of the Universe.

For this unique endeavor, one that brings together the astrophysics and particle physics communities, NASA has teamed up with the U.S. Department of Energy and institutions in France, Germany, Japan, Italy and Sweden. General Dynamics was chosen to build the spacecraft. Fermi was launched June 11, 2008 at 12:05 pm EDT.

Latest News

Nov 1, 2018

GBM Team Releases GSpec 0.9.1

The Fermi Gamma-ray Burst Monitor Team is pleased to announce the release of GSpec 0.9.1, a first beta release for the Python replacement of RMfit, utilizing the community-standard XSPEC for spectral fitting. GSpec is built on top of the GBM Data Tools, which will be delivered with a full API in a future release. To download the package, please visit https://fermi.gsfc.nasa.gov/ssc/data/analysis/gbm.

Oct 17, 2018

NASA's Fermi Mission Energizes the Sky With Gamma-ray Constellations

Scientists on NASA's Fermi Gamma-ray Space Telescope mission have devised a set of modern constellations constructed from the sky's brightest gamma-ray sources.
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Oct 16, 2018

A GRB a lot like GW170817

In an archival search, Fermi finds that gamma-ray burst GRB150101B has similarities to GRB 170817A associated with the famous gravitational wave detection of a binary neutron star merger GW170817.
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