The Compton Gamma Ray Observatory was a space observatory detecting photons with energies from 20 keV to 30 GeV, in Earth orbit from 1991 to 2000. The observatory featured four main telescopes in one
CGRO deployed in 1991
Launch of Space Shuttle Atlantis carrying the observatory to Earth orbit (STS-37)
Astronaut Jay Apt in the Space Shuttle bay with the observatory partially deployed but still attached to the Shuttle's robotic arm
Compton Gamma Ray Observatory cutaway
Chandra X-ray Observatory
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The Chandra X-ray Observatory, previously known as the Advanced X-ray Astrophysics Facility, is a Flagship-class space telescope launched aboard the Space Shuttle Columbia during STS-93 by NASA on Jul
Compton Gamma Ray Observatory
…16,300 kilograms (35,900 lb). Costing $617 million, the CGRO was part of NASA's Great Observatories series, along with the Hubble Space Telescope, the Chandra X-ray Observatory, and the Spitzer Space Telescope. It was the second of the series to be launched into space, following the Hubble Space Telescope. The CGRO was named…
Illustration of Chandra
Chandra X-ray Observatory mission logo NASA Great Observatories← ComptonSpitzer → Large Strategic Science Missions Astrophysics Division← ComptonJWST →
Space Shuttle Columbia, STS-93 launches in 1999
Crew of STS-93 with a scale model