Introduction 6 _Milestones of Flight_ Gallery 100 Robert H. Goddard’s Rockets: March 16, 1926, and 1941 7 _Sputnik 1_ 8 _Explorer 1_ 9 _Mariner 2_ 10 _Friendship 7_ 11 _Gemini 4_ 12 Apollo 11 Command Module, _Columbia_ 13 _Life in the Universe_ Gallery 107 Ponnamperuma Experiments 14 Photomosaic Globe of Mars 15 _Mariner 10_ 16 U.S.S. _Enterprise_ 17 _Satellites_ Gallery 110 Goddard A-Series Rocket, 1935 18 WAC Corporal 19 Aerobee 150 20 Farside 21 Nike-Cajun 22 ARCAS 23 Cricket 24 Viking 12 25 MOUSE 26 Agena-B 27 Science Satellites 28 Meteorological Satellites 30 Communications Satellites 32 _East Gallery_ Gallery 112 Lunar Module 34 Lunar Orbiter 35 Surveyor 36 _Rocketry and Space Flight_ Gallery 113 Goddard Rockets: May 1926 and “Hoopskirt,” 1928 37 19th-Century Rockets: Congreve and Hale 38 American Rocket Society: Engines and Parts 39 H-1 Engine 40 RL-10 Engine 41 JATO Units 42 LR-87 Engine 43