
A rocketsonde, a kind of sounding rocket, is a system for atmospheric observations that consists of a rocket that launches instruments that can make weather observations up to an altitude of 75,000 m. Common meteorological rockets (rocketsondes) are the Loki and Super Loki. A typical rocket is 3.7 m tall and is powered by a 10 cm diameter solid fu...
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http://en.wikipedia.org/wiki/Rocketsonde

A rocket-borne instrument for measurement and transmission of upper-air meteorological data in the lower 76,000 meters (250,000 feet) of the atmosphere, especially that portion inaccessible to radiosonde techniques.
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https://www.encyclo.co.uk/local/20128
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