The NASA Compton Gamma-Ray Observatory (CGRO) Composite is a comprehensive mission that represents a collection of gamma-ray telescopes and detectors used to study high-energy gamma-ray emissions from celestial sources. The CGRO Composite is part of NASA's efforts to explore the universe's most energetic and extreme phenomena.
Launched in 1991, the CGRO Composite included four primary instruments: the Burst and Transient Source Experiment (BATSE), the Oriented Scintillation Spectrometer Experiment (OSSE), the Imaging Compton Telescope (COMPTEL), and the Energetic Gamma Ray Experiment Telescope (EGRET). Each instrument was designed to observe gamma-ray emissions over various energy ranges.
CGRO made significant contributions to our understanding of gamma-ray bursts, pulsars, quasars, and other high-energy astrophysical phenomena.
