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 Gamma-ray Large Area Space Telescope (GLAST) will open this high-energy world to exploration and help us to answer these questions. With GLAST, astronomers will 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 will be able to study subatomic particles at energies far greater than those seen in ground-based particle accelerators. And cosmologists will gain 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 is teaming up with the U.S. Department of Energy and institutions in France, Germany, Japan, Italy and Sweden. General Dynamics has been chosen to build the spacecraft. The launch is scheduled for May 16, 2008.

Mission Objectives

  • Explore the most extreme environments in the Universe, where nature harnesses energies far beyond anything possible on Earth.
  • Search for signs of new laws of physics and what composes the mysterious Dark Matter.
  • Explain how black holes accelerate immense jets of material to nearly light speed.
  • Help crack the mysteries of the stupendously powerful explosions known as gamma-ray bursts.
  • Answer long-standing questions across a broad range of topics, including solar flares, pulsars and the origin of cosmic rays.

Latest News

May 13 , 2008

NASA's GLAST Gets Shades, Blankets for the Beach

NASA's Gamma-ray Large Area Space Telescope, or GLAST, is receiving finishing touches at the Cape Canaveral Air Force Station, near the beaches of eastern central Florida for its launch. The spacecraft is set for launch aboard a Delta II rocket no earlier than June 3. The launch window runs from 11:45 a.m. to 1:40 p.m. EDT.
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April 21, 2008

Powerful Antenna Attached to NASA's GLAST Satellite

The powerful antenna system that will enable NASA's Gamma-ray Large Area Telescope (GLAST) to communicate with stations on Earth has been successfully connected to the spacecraft in the Astrotech payload processing facility near NASA's Kennedy Space Center, Fla.
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April 14, 2008

Delta II Rocket Coming Together for NASA's GLAST Satellite Launch

The Delta II 7920-H, or "Heavy," rocket that will launch NASA's Gamma-ray Large Area Telescope (GLAST) satellite is in the process of being assembled on Launch Pad 17-B at Cape Canaveral Air Force Station, Fla.
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