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The Soviet satellite, Sputnik 1, is the first object sent into space and successfully orbit the Earth.
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The first United Sates satellite to orbit the Earth, Explorer 1, is launched
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Nation Aeronautics and Space Administartion is formed
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Russian citizen, Yuri Gagarin, is the first human in space
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Alan Shepard is the first United Sates citizen to go into space
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John Glenn is the first United States citizen to orbit the earth
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Apollo 11 crew members Neil Armstrong and Edwin Aldrin become the first and second men to walk on the moon
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The first American Space Shuttle is launched and also marks the use of the first re-usable space craft
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The space shuttle, Challenger explodes shortly after take-off
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Human Habitation in the Internation Space Station Begins
