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Type: BOOK - Published: 1971 - Publisher:
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Sounding rockets provided the first means to carry instruments to the outermost reaches of the Earth's atmosphere. They were, indeeed, our first space vehicles.
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To explore the upper atmosphere man first used kites, then balloons, then aircraft. For many years balloons were the most effective means of obtaining direct me
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Type: BOOK - Published: 1973 - Publisher: