AVE6327666: United States, 1950s: Close up of Joseph Stalin / Bridgeman Images

AVE6327527: United States, 1970s: animation of thorium 234 molecule / Bridgeman Images

AVE6327415: United States, 1950s: Animation of two cars at night with lights on full and low beam / Bridgeman Images

AVE6327560: United States, 1970s: keep door closed sign inside mine / Bridgeman Images

AVE6327693: Russia, 1950s: Konstantin Tsiolkovsky writes literature regarding the potential future of space exploration with the invention of rockets / Bridgeman Images

AVE6327703: United States, 1950s: A rocket starts to get smoke as it stands next to a launch pad / Bridgeman Images

AVE6327709: United States, 1950s: Dr. Goddard, a pioneer in rocketry, attempts to test his parachute in a field / Bridgeman Images

AVE6327878: 1960s: Woman places child in crib / Bridgeman Images

AVE6327996: America, c.1990s: Three astronauts on exterior of space shuttle Endeavour as Intelsat VI satellite hovers above them / Bridgeman Images

AVE6327893: America, c.1990s: Astronaut in space receives telecom instructions while attached to a robotic arm / Bridgeman Images

AVE6327793: America, c.1990s: POV from base of robotic arm: Astronaut in space, attached to robotic arm, carrying a satellite capture bar / Bridgeman Images

AVE6327917: 1960s: Hands hold glass tube over Bunsen burner / Bridgeman Images

AVE6327802: 1950s: Male professor stands at chalkboard with drawing of two people / Bridgeman Images

AVE6327959: 1960s: Boy adjusts catcher's mask / Bridgeman Images

AVE6328105: United States, 1960s: upside down piggy bank shaken / Bridgeman Images

AVE6328025: United States, 1950s: Scientists who helped produce weapons for Germany take their inventions and leave their hideout / Bridgeman Images

AVE6328126: Europe, 1940s: boy in street / Bridgeman Images

AVE6328147: Europe, 1940s: hand fills container with water / Bridgeman Images

AVE6328133: Europe, 1940s: sign for village / Bridgeman Images

AVE6328198: UNITED STATES: 1981: People looking up at sky as space shuttle takes off. / Bridgeman Images

AVE6328201: Europe, 1940s: people walk through streets / Bridgeman Images

AVE6328157: Europe, 1940s: bones on ground / Bridgeman Images

AVE6328274: Man Pushes Cart of Fruit and Vegetables for Children to See / Bridgeman Images

AVE6328255: UNITED STATES: 1981: Space shuttle closes doors. / Bridgeman Images

AVE6328305: 1980s: Man sits in chair talking / Bridgeman Images

AVE6328333: Russia, 1950s: Russian newspapers and headlines / Bridgeman Images

AVE6328314: Russia, 1950s: lady sits and listens / Bridgeman Images

AVE6328348: Russia, 1950s: steam around worker and machine in factory / Bridgeman Images

AVE6328332: Russia, 1950s: ladies listen to speaker / Bridgeman Images

AVE6328402: 1980s: Astronauts work in docking bay of Space Shuttle, in space / Bridgeman Images

AVE6328405: 1980s: People stand around plans on drawing table, talking / Bridgeman Images

AVE6328411: Lady Pulls Down Underskirt / Bridgeman Images

AVE6328506: United States, 1960s: lady holds new baby in back of car / Bridgeman Images

AVE6328465: United States, 1960s: face of police officer speaking to camera / Bridgeman Images

AVE6328536: United States, 1960s: Group of singers walk onto stage from behind screen, sings into camera / Bridgeman Images

AVE6327636: Germany, 1940s: A rocket successfully launches and opens fire in a town / Bridgeman Images