“April 7, 1991, Deployment of Breakthrough Gamma-ray Observatory” was uploaded to Flickr

Twenty-five years ago, NASA launched the Compton Gamma Ray Observatory, an astronomical satellite that transformed our knowledge of the high-energy sky. In this view, taken on April 7, 1991, from the aft flight deck window of space shuttle Atlantis, the Compton Gamma Ray Observatory is released by the shuttle's remote manipulator system. via NASA ift.tt/23lAYLv
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April 7, 1991, Deployment of Breakthrough Gamma-ray Observatory was taken on July 07, 2009 at 10:17AM