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First Atomic explosion in New Mexico
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First Atomic Bomb test
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Atomic bomb drops on Japan
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Development of Hydrogen Bomb
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Soviet development of nuclear weapons
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Soviets launch first satitlite, Sputnik
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United States launched Explorer 1
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Yuri Gagarin first man in space and orbit
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First American in space Alan Shepard
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Kennedys wants man on the moon by end of decade
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John Glenn first American in orbit
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Valentina Nikolayeva first woman in space
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Cosmonaut Alexei Leonov first person to walk in space
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Astronaut Ed a White first American walking in space
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Luna 9 lands on moon
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Surveyor 1 lands on moon
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Gus Grissom, Ed White, Rogger Chaffee die in cabin fire
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Vladimir komarov died when his parachute didn't open
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Descent capsule takes samples of Venus's atmosphere
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Soviet zond5 orbits moon and returns to earth
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Apollo 8 first manned craft to orbit moon
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Buzz Aldrin and Neil Armstrong first men on moon
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ICBM Intercontinental Ballistic Missle
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Venera7 was first probe to land on Venus
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US launched first space station
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Challenger exploded after taking off
