Source: wikibot/contrail
= Contrail
{wiki=Contrail}
"Contrail" is a term that can refer to two main concepts, depending on the context: 1. **Aerospace**: In the context of aviation, "contrail" refers to the condensation trail formed by aircraft that fly at high altitudes. When the hot, humid air from jet engine exhaust mixes with colder ambient air at high altitudes, it can lead to the formation of ice crystals, creating visible white streaks in the sky.