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He had developed a rocketthat could reach a height of 1.5 miles.
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It was launched in 1957. Then Sputnik 2 was launched month later.
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sputik carried a dog into space her name was laika. It burned up i the atmosphere.
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Sam was the first monkey in space. He went in 1959.
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Yuri Gorgan orbited the Earth on April 12, 1961 it lasted 18 minutes.
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Yuri Gagarin was the first to person to orbit Earth. He went around Earth April 12, 1961
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Valentina Tereshkova went up into space. She orbited the earth in the Vostoc 6 in june 16,1963
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He made a space walk that lasted 22 minutes.