CGRO carried a complement of four instruments that covered an unprecedented six decades of the It was deployed to an altitude of 450 km on April 7, 1991 when it was first launched.After one of its three gyroscopes failed in December 1999, the observatory was deliberately de-orbited.
Categories Objects that emit gamma rays cannot be photographed, but images can be derived through painstaking reconstruction of detector data. In operation from 1991 to 1999, it was named in honour of Arthur Holly Compton, one of the pioneers of high-energy physics. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. It was realized that momentary random “bursts” of Through CGRO’s instruments, the gamma-ray bursts were seen to be scattered evenly throughout the sky. Login A detector known as EGRET (Energetic Gamma Ray Experiment Telescope) has produced an all-sky map showing emissions of gamma radiation through the Milky Way. Compton Gamma Ray Observatory The Compton Gamma Ray Observatory (CGRO) is the second of the great observatory series of four spacecraft NASA plans to launch. Our editors will review what you’ve submitted and determine whether to revise the article.In the late 1960s and early 1970s, satellites built to detect nuclear explosions by emitted gamma rays yielded many false reports. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.
The COMPTEL map was of a gamma-ray line from the decay of the isotope 26-Al produced in supernova explosions. https://en.wikipedia.org/wiki/Compton_Gamma_Ray_Observatory
This proved that the bursts were at cosmological distances, because, if they were from events in the Milky Way Galaxy, they would have appeared predominantly in the galactic plane. With some controversy, NASA decided in the interest of public safety that a controlled crash into an ocean was preferable to letting the craft come down on its own at random.This de-orbit was NASA's first intentional controlled de-orbit of a satellite. The observatory was launched on … The OSSE map was of a gamma-ray line from the annihilation of positron antimatter. At the time, the observatory was still operational; however the failure of another gyroscope would have made de-orbiting much more difficult and dangerous. The Compton Gamma Ray Observatory (CGRO) was the second of the NASA "Great Observatories" to be launched to space, following the Hubble Space Telescope. It is the second in NASA's program of orbiting "Great Observatories", following the Hubble Space Telescope. Author of Compton Gamma Ray Observatory (CGRO), U.S. satellite, one of the National Aeronautics and Space Administration (NASA) “Great Observatories” satellites, which is designed to identify the sources of celestial gamma rays. Get exclusive access to content from our 1768 First Edition with your subscription. Features The Compton Gamma Ray Observatory (GRO) is a sophisticated satellite observatory dedicated to observing the high-energy Universe. Space historian and freelance writer, Glasgow, Scotland. GRO's specific mission is to study the sources and astrophysical processes (e.g., nuclear reactions, electron bremsstrahlung, matter-antimatter annihilation, elementary particle producation and decay, Compton scattering, and synchrotron radiation) that produce that highest energy electromagnetic radiation from … Approximately how many miles are there in a light-year? This result (when In addition, CGRO also made significant observations of supermassive After one of CGRO’s gyroscopes failed in November 1999, NASA decided to deorbit the satellite, and it reentered the atmosphere on June 4, 2000. The Compton Gamma-Ray Observatory (GRO) is one of NASA's four "Great Observatories". The map showed where supernovae had exploded over the past million years. History at your fingertips Search Britannica Gamma Ray Observatory: Purpose and Discoveries The Gamma Ray Observatory (GRO) is designed to survey gamma ray sources such as novas, supernovas, and neutron stars. Launched in 1991, the CGRO is a complex spacecraft fitted with four different gamma-ray detectors, each of which concentrates on different but overlapping energy ranges.
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