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Sputnik
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the first animal to orbit around the earth in space was a dog named Laika
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Explorer 1 was the first satellite and the first to carry science instruments.
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NASA has since sponsored space expeditions, both human and mechanical, that have yielded vital information about the solar system and universe.
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The first man to travel to space was Yuri Gagarin, a Soviet pilot and cosmonaut. He completed one orbit of Earth on April 12, 1961
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The first man in space was Yuri Gagarin, a Soviet Air Force pilot who orbited the Earth
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The first American to orbit the Earth was John Glenn. He accomplished this feat on February 20, 1962, aboard the Friendship 7 spacecraft
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while on the Soviet Voskhod 2 mission, Alexei Arkhipovich Leonov performed the world's first EVA.
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Ed White became the first American to walk in space when he ventured outside the Gemini capsule into the vacuum of the cosmos.
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John F. Kennedy announced before a special joint session of Congress the ambitious goal of sending an American safely to the Moon before the end of the decade.
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The first animal sent to space by the United States was a rhesus monkey named Albert II.