Most airplanes need aviation fuel to keep the engines running and to keep the planes in the air. Some dont need aviation fuel like gliders, there powered by the wind.
Nowadays,the technology is so advanced that solar-powered aeroplanes are getting introduced.Maybe we will see them in the coming years.
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Aviation fuel is made to a more-exacting formula than other fuels, and it's tracked for quality from the refinery to the fuel nozzle. The most common aviation gasoline is 100LL (means "low lead"). 100LL was introduced shortly after World War II and has been made the same way ever since. Automotive gasoline, OTOH, is reformulated very frequently and isn't held to quality standards quite as high as avgas is...for the simple reason that bad fuel can kill an aviator but mostly inconveniences a car driver.
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