STS037-03-033 (7 April 1991) --- The Gamma Ray Observatory (GRO) is held above Atlantis' cargo bay, backdropped against dark space. The large observatory's solar panels and high-gain antenna are not deployed in this early scene. An emergency extravehicular activity (EVA) was later required to manually deploy the high-gain antenna. The 35mm frame was photographed through Atlantis' aft flight deck windows.