Compton Gamma Ray Observatory (IMAGE) NASA/Goddard Space Flight Center Caption Astronauts imaged the Compton Gamma Ray Observatory during its deployment from space shuttle Atlantis in April 1991. Credit NASA/STS-37 crew Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.