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Contrails
Contrails are long, thin artificial clouds that sometimes form behind aircraft. Their formation is most often triggered by the water vapor in the exhaust of aircraft engines, but can also be triggered by changes in air pressure in wingtip vortices or in the air over the entire wing surface. Contrails are made of water in the form of a suspension of billions of liquid droplets or ice crystals.
Contrails
Contrails are long, thin artificial clouds that sometimes form behind aircraft. Their formation is most often triggered by the water vapor in the exhaust of aircraft engines, but can also be triggered by changes in air pressure in wingtip vortices or in the air over the entire wing surface. Contrails are made of water in the form of a suspension of billions of liquid droplets or ice crystals.