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ImagesSoviet Union launches Sputnik 1, the world's first artificial satellite.
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LaikaSoviet Union launched Sputnik 2 carrying a dog named Laika. Never returned.
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PictureUnited States launches Explorer 1.
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BuildingN.A.S.A. is founded and formally organized.
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GagarinVostok 1 is launched by the Soviet Union carrying Yuri Gagarin, the first man in space. He orbits the Earth once.
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GlennJohn Glenn became the first American to orbit the Earth in Friendship 7. He orbits the Earth 3 times.
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Apollo 11Apollo 11 astronauts Neil Armstrong and Buzz Aldrin land and walk on the moon. (First men to walk on the moon.)
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SkylabSkylab, a US space station, is launched and used as a laboratory in earth orbit.
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PictureAmerican Apollo & Soviet Soyuz 19 are managed jointly for first international space flight mission.
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1st woman Sally Ride becomes the first American woman in space.
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ChallengerThe Challenger disintegrates less than one minute after launch, killing seven astronauts.
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Hubble NASA's Hubble Telescope sent into space for exploration.
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2nd tripJohn Glenn, 77, becomes the oldest person to travel in space.
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STS-107Space shuttle Columbia STS-107 disintegrated upon re-entering the Earth's atmosphere. The fiery explosion left a huge trail of debris, mostly over East Texas.
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Satellite Two communication satellites, one Russian and the other American collide in space.
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ISSInside the Space Station International Space Station is scheduled to be completed.