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Fermi Gamma-ray Space Telescope

NASA's Fermi Gamma-ray Space Telescope surveys the high-energy sky with the Large Area Telescope and Gamma-ray Burst Monitor. Together they study pulsars, gamma-ray bursts, black-hole-powered galaxies, cosmic particle acceleration, solar activity, and possible signatures of fundamental physics.

Fermi Gamma-ray Space Telescope
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Identity

Aliases
FermiGamma-ray Large Area Space TelescopeGLAST
Name
Fermi Gamma-ray Space Telescope
Status
active

Details

Astronauts
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Description
NASA's Fermi Gamma-ray Space Telescope surveys the high-energy sky with the Large Area Telescope and Gamma-ray Burst Monitor. Together they study pulsars, gamma-ray bursts, black-hole-powered galaxies, cosmic particle acceleration, solar activity, and possible signatures of fundamental physics.
Destination
Near-circular low Earth orbit at approximately 565 km altitude and 25.6° inclination (96.5-minute period) for all-sky gamma-ray observations from 8 keV to above 300 GeV
Launch Site
Outcome
Fermi remains active in an extended mission, scanning the full sky about every three hours. Its discoveries include hundreds of gamma-ray pulsars, the enormous Fermi Bubbles above and below the Milky Way, and high-energy counterparts associated with gravitational-wave and neutrino events.
Programs
Start Date
2008-06-11
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Assets & Meta

Creation Time
July 18, 2026 at 14:48:30 UTC
Updated Time
August 22, 2026 at 13:34:02 UTC

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Fermi Gamma-ray Space Telescope Fermi Gamma-ray Large Area Space Telescope GLAST
Space Stations
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