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Also called rocket motors had been used since the 1200
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The father of modern rocketry invented the liquid fuel rocket
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Soviet Union launched Sputnik 1
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Responded with its first satellitewith the name of Explorer 1
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Became the first person to travel in space
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became the first American to orbit earth
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the first woman to fly in space
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Launched three cosmonauts aboard single spacecraft
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As the Apollo CSM Columbia orbited the moon
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was launched
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conducted five more successful apollo moon landings
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The last astronauts to visit the moon boarded the LM
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The U.S.A launched its first space station ,Skylab.
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A number of companies have designed their own rockets
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was launched
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The Soviet Union launched the space station Mir
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was destroyed by an acciedent shortly after launched
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He called on the united states to construct a new space station
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15nd nations were working together to built ISS
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that was launched in 1998 , and first ISS crew arrived in 2000
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after fifteen years in space ,Mir finally entered the Eath atmosphere and burned up in 2001
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orbited the earth 14 times in his Shenzhou 5 spacecraft
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broke up after reetering the earth atmosphere
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announced that the USA would begin a new space exploration program that would send astronauts
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was schedule for completion in 2006, delays pushed this back to 2011
