The aircraft normally fly at above 30,000 feet where the air is always ultra cold and very thin. The thin air reduces the amount of resistance to the aircraft moving through it and the engine's large compressor is able to compact that thin air sufficiently to get optimum combustion conditions and thus form vapor trail.
Another name for a plane vapor trail is a contrail, short for condensation trail. Contrails are formed when water vapor from the engine exhaust of an aircraft condenses into ice crystals due to the cold temperatures at high altitudes.
A comet usually has two tails, though only one - the vapor trail - is commonly seen from earth (the other is a gas trail). It is made of vapor blown off from the comet by the solar wind - it is mostly water vapor, but contains many other molecular substances, too - ammonia, cyanide, methane, etc.
decomposition
Planes that fly at high altitudes, typically commercial jets, leave vapor trails, also known as contrails. These trails are composed of water vapor, created when hot exhaust gases combine with cold, humid air in the atmosphere.
When burning paraffin, two main substances produced are carbon dioxide and water vapor. Carbon dioxide is a greenhouse gas, and water vapor contributes to the overall increase in atmospheric humidity.
That line of smoke is called a vapor trail. You can still see it on low flying planes, but it must be a jet plane.
A vapor trail, also known as a contrail, is a visible line of condensed water vapor created by the exhaust of an aircraft flying at high altitudes. When the hot, humid air from the engines mixes with the colder atmosphere, it can form ice crystals, resulting in the trail we see behind the aircraft. These trails can vary in appearance and duration, depending on atmospheric conditions such as temperature and humidity.
A contrail or a vapor trail. See the related link for confirmation.
A vapor trail, or contrail, consists primarily of water vapor produced by aircraft engines. When the hot exhaust gases from the engines mix with the cold atmosphere at high altitudes, the water vapor condenses and freezes, forming ice crystals. These trails can persist and spread out depending on atmospheric conditions, creating visible streaks in the sky. In some cases, they may also contain small amounts of pollutants from the aircraft.
Another name for a plane vapor trail is a contrail, short for condensation trail. Contrails are formed when water vapor from the engine exhaust of an aircraft condenses into ice crystals due to the cold temperatures at high altitudes.
Snow is frozen water vapor. It is produced when water vapor in the air is turned solid by the freezing temperature.
Carbon monoxide and other left overs from combustion. However, the trail you see behind a plane flying high up is called the contrail, and it consists of water vapor that freezes behind the plane.
Water vapor.
steam
water vapor
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A comet usually has two tails, though only one - the vapor trail - is commonly seen from earth (the other is a gas trail). It is made of vapor blown off from the comet by the solar wind - it is mostly water vapor, but contains many other molecular substances, too - ammonia, cyanide, methane, etc.