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The Father of Space Flight
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Academician Academy of Sciences altitude American animals artificial Earth satellite artificial satellites astronautics automatic Baikonur Booster Payload Orbital cabin Cape Canaveral carried carrier rocket cosmic radiation cosmic rays cosmic ship cosmic space cosmonauts Cosmos date Booster Payload Designation Launch date dogs effort electronic engineers equipment firing Gagarin German Gherman Titov instruments International Geophysical interplanetary communications kilometers Launch date Booster Lunik ments military minutes Moon Moscow motor observations official Orbital period Orbital period Orbital Orbital velocity Lifetime Orbital weight Perigee/Apogee parachute Payload Orbital weight Peenemunde perigee planet possible pounds thrust problems Project Mercury radio reentry rocket flight Russians scientific Sedov sians signals solar Soviet space program Soviet Union space flight space program Spacecraft spaceship speed Sputnik stage station surface temperature tests tion Titov trajectory transmitted Tsander Tsiolkovskii United upper atmosphere USSR USSR Academy Venus Probe Vostok