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This is important because it was the first aircraft launched into space
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This is important because Lakia wasa the first living thing to be launched into space and come back alive. Lakia was a dog from Russia.
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This is important because Explorer 1 was the first satellite launched by the United States when it was sent into space.
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Vanguard 1 was a small earth-orbiting satellite
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Sputnik 3 was launched into space
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-IGY space probe, launched to a height of 70,700 miles,the pioneer 1 was launche into space, it was th first pioneer.
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Luna 1, first man-made satellite to orbit the moon, is launched by the U.S.S.R.
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This was the first images of non-facing side of moon
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The first space walk is made from Soviet Voskhod 2 by Cosmonaut Alexei A. Leonov. Duration is 12 minutes.
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(The first man to walk on the moon during the 1969 Apollo 11 mission, has died. He was 82.) Neil Armstrong walks on moon.