[Illustration: Solid rocket motors being jettisoned during launch of Geostationary Operational Environmental Satellite-1.] [Illustration: View from right-hand seat of _Gemini 8_ spacecraft when docked with Agena target vehicle.] [Illustration: Artist’s conception of Viking Mars lander as it heads for touch down.] [Illustration: Agena target vehicle seen from _Gemini 11_ after tether drop.] [Illustration: View of Skylab Orbital Workshop photographed by _Skylab 2_ crew.] [Illustration: _Viking 2_—bound for Mars—is launched aboard Titan Centaur on September 9, 1975.] [Illustration: Paul Calle’s interpretation of Saturn 5 launch.] [Illustration: New York to Norfolk composite photo from the Earth Resources Technology Satellite-1.] [Illustration: Photomicrograph of thin section of lunar rock.] [Illustration: Color enhancement of far ultraviolet photo of the Earth taken from space.] [Illustration: NASA’s Wallops Island Test Station in Virginia.] (All photographs from the National Aeronautics and Space Administration.) [Illustration: Back Cover] Transcriber’s Notes —Retained publication information from the printed edition: this eBook is public-domain in the country of publication. —Silently corrected a few palpable typos. —Moved captions nearer the relevant images; tweaked image references within captions accordingly. —In the text versions only, text in italics is delimited by _underscores_. End of the Project Gutenberg EBook of Rockets, Missiles, and Spacecraft of the National Air and Space Museum, by Lynne C. Murphy