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http://history.nasa.gov/sputnik/http://www.thespacerace.com/timeline/ This is the start of a multi year spread between the USSR and the USA. It was a successful launch and it was the size of a beach ball.
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http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1957-002Ahttp://www.thespacerace.com/timeline/ This was the first biological spacecraft.
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http://www.jpl.nasa.gov/explorer/history/http://www.thespacerace.com/timeline/ This was the first sattelite launched for the USA. It did 58.000 orbits before burning up.
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http://www.jpl.nasa.gov/missions/explorer-2/http://www.thespacerace.com/timeline/ This was another launch by the USA except that this one did not do much because it failed to ignite.
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http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1958-002Bhttp://www.thespacerace.com/timeline/ This was a small sattelite that was used to test launch capabilities.
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http://www.zarya.info/Diaries/Sputnik/Sputnik3.phphttp://www.thespacerace.com/timeline/ This was the third sattelite that the USSR used and it took 106 minutes to orbit Earth.
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http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1958-007Ahttp://www.thespacerace.com/timeline/ This was a very successful sattelite that was launched by the USA. It was launched to study the radiation and many other types of things in space.
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http://www.zarya.info/Diaries/Soyuz/Soyuz4-5/Mission.phphttp://www.thespacerace.com/timeline/ This was termed the first space station up in space. Also they went from 4 to 5 so the were the first people to go up in one and down in another.
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http://www.thespacerace.com/timeline/ This was the day where Neil Armstrong made it up the the moon and was able to step on it. He is known for the first ever human to step on the moon.
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http://www.thespacerace.com/timeline/ Thsi was when the US had the first lunar landing up in space.