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Sputnik, first artifical satellite launched - Russia
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Laika, first mammal sent into space - Russia
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The Mercury Program began - usa
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Yuri Gagarin, first man in space - Russia
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Alan Shepard ; first US astronaut sent into space
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Apollo Space Program began
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Gemini Space Program began - US
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John Glenn ; first US astronaut to orbit the Earth
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Lieutenant Valentina Tereshkova, first woman in space - Soviet Union
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Neil Armstrong ; first man on the moon - US
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Launch of Voyager 2
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Launch of Voyager 1
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Columbia, first space shuttle mission - US