High Quality Content by WIKIPEDIA articles! A sounding rocket, sometimes called a research rocket, is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight. The origin of the term comes from nautical vocabulary, it refers to to sound, which means to throw a weighted line off of a ship to gauge the water's depth. It is intended here as taking a measurement. The rockets are commonly used to take readings or carry instruments from 50 to 1,500 kilometers (30–932 mi) above the surface of the Earth, the altitude generally between weather balloons and satellites; the region above the maximum altitude for balloons is about 40 km (25 miles) and the minimum for satellites is approximately 120 kilometers (75 mi).

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