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.
Custom pulsations searches for all of GBM catalogued and non-catalogued sources are now available! For more information, please visit: the NSSTC GBM page.
NASA's Fermi Gamma-ray Space Telescope has discovered a faint but sprawling glow of high-energy light around a nearby pulsar. If visible to the human eye, this gamma-ray "halo" would appear about 40 times bigger in the sky than a full Moon. This structure may provide the solution to a long-standing mystery about the amount of antimatter in our neighborhood.
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On November 15, 2019 the FSSC became aware that approximately 17 days of photon data had been missing from the LAT data server for almost a year. The missing data covered a continuous span from November 1, 2018 (MET 562723575) to November 17, 2018 (MET 564168732). The data was accidentally deleted during the switchover to the P8R3 data on November 26, 2018. Only photon data retrieved from the FSSC's LAT data server was affected. The weekly photon all-sky files and the extended and spacecraft data were not affected. The missing data has now been restored to the LAT data server. The issue seems to have been a one-off problem due to the switchover, but the FSSC has taken steps to better detect any such problems in the future.