A rocket is any vehicle propelled by the ejection of gases produced by the combustion of self-contained propellants. Rockets are used in fireworks, as military weapons and in scientific applications such as space exploration.
The rocket was invented circa 1150 in China and was initially used as a firework. The type of firework in question was a “ground-rats” firework and it consisted of a tube of bamboo filled with gunpowder and had a small hole through which the gases could escape. This firework, when lit, shot about in all directions on the floor at firework displays. Here is the oldest depiction of rockets attached to arrows:
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