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The first American rocket to use liquid fuel was made by Robert Goddard. The rocket was launched in 1926.
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The Cold War was between the USSR and the US. It began with the Truman Doctrine and ended with the dissolution of the USSR
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On October 24th, 1957, The Soviet Union launched the first satellite, named Sputnik 1
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On November 3rd, 1957, The Soviets launched Sputnik 2, carrying a dog named Laika, who died with in 2 days of the flight
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On 1958 NASA was established because of the Space Race.
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On April 12th, 1961, Yuri Gagarin was launched into orbit the the Soviets, making him the first man in space
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On February 20th, 1962, Future U.S senator John Glenn was the first American to be launched into orbit.
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On July 20th, 1967, Neil Armstrong and Buzz Aldrin were the first people to land on the moon by riding the Apollo 11
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The Soviets sent a total 6 space stations into orbit for scientific and military reasons in the course of about 11 years
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The Apollo 17 mission was the last mission of NASA's Apollo missions. It was also the last time someone has walked on the moon
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Skylab was the United States' first space station. From 1973 to 1979, Skylab was in orbit.
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On January 28th, 1986, The Challenger disintegrated in mid-air 73 seconds after launch. 7 crew members were on the Challenger, and they died.
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The first telescope in space was the Hubble. The space shuttle Discovery put it into orbit in 1990
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NASA sent the Mars Pathfinder to study Mars for 3 months
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On November 20th, 1998, The U.S launched the most expensive piece of technology ever, The ISS
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Mir was the first space station designed for long-term use. On 2001, Mir was taken out of orbit which then made Mir fall into the Pacific Ocean
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On February 1st, 2003, the space shuttle Colombia disintegrated upon reentering earth's atmosphere, killing all 7 seven crew members
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Since 2004, the Cassini mission has been studying Saturn, its rings, and its moons.
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Spirit and Opportunity were 2 more rovers that NASA sent in space. Opportunity is still exploring Mars, but Spirit got stuck in January 2010.
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The probe collided with a comet in 2005. The probe collected data from the impact.