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Sputnik is launched by Soviet Union
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U.S. launches first satellite into orbit
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NASA is formed
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First man, cosmonaut Yuri Gagarin, is launched into space
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Alan Shepard is the first American in space
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John Glenn is the first American to orbit the Earth
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Valentina Tereshkova was first woman in space
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First spacewalk by Russian Alexey Leonov
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Fire inside command module during a launch pad practice of the Apollo I mission takes lives of three astronauts
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Neil Armstrong is the first person to set foot on the moon
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Apollo 11 is the first manned landing on the moon
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Apollo 13 is crippled by explosion, all men returned safely; journey to moon is cancelled
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Apollo 17 is the last American moon landing
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Space shuttle Columbia's first launch on mission STS-1
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Space shuttle Challenger's first launch on mission STS-6
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Sally Ride becomes first American woman in space
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Space shuttle Discovery's first launch on mission 41-D
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Marc Garneau is the first Canadian man in space on mission STS-41-G
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Space shuttle Atlantis' first launch on mission 51-J
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Challenger explodes minutes after takeoff, killing seven crew members
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Discovery launches carrying the Hubble Space Telescope
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Roberta Bondar is the first Canadian woman in space on mission STS-42
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Space shuttle Endeavour is launched on mission STS-49
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Space shuttle Columbia breaks apart during reentry, killing all seven members of the crew
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Last landing of Discovery on mission STS-133
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Landing of Endeavour's last mission STS-134
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Final space shuttle landing by Atlantis STS-135
End of Space Transportation System.