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Het gaat om heel verschillende typen - wondersprookjes
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Nasa Sounding Rockets, 1958-1968 / A Historical Summary Van Het gaat om heel verschillendeTo explore the upper atmosphere man first used kites, then balloons, then aircraft. For many years balloons were the most effective means of obtaining direct measurements in the stratosphere. But they were limited in altitude, so scientists had to probe the ionosphere and other portions of the atmosphere beyond the stratosphere by indirect means. Sounding rockets provided the first means to carry instruments to the outermost reaches of the Earth's
