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Compton Gamma Ray Observatory
Gehrels, Neil Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, Maryland.
- Gamma-ray bursts
- Active galaxies
- Neutron stars
- Solar flares
- CGRO's impact
- Related Primary Literature
- Additional Reading
The Compton Gamma Ray Observatory (CGRO), launched on April 4, 1991, was the second of the National Aeronautics and Space Administration's (NASA's) four great observatories (Fig. 1), following the Hubble Space Telescope and preceding the Chandra X-ray Observatory (CXO), launched on July 23, 1999, and the Spitzer Space Telescope [formerly the Space Infrared Telescope Facility (SIRTF)], launched on August 25, 2003. For over 9 years, CGRO took high-quality images and spectra of a variety of high-energy sources, including gamma-ray bursts, active galaxies, pulsars, supernova remnants, and solar flares. Deorbited on June 4, 2000, CGRO leaves behind a legacy of discoveries and advances in high-energy astrophysics and the initiation of a new era of gamma-ray astronomy. See also: X-ray astronomy
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