The engines create smoke .
The contrails are the result of 1200 degree jet exhaust being released into much, much colder ambient air.
The white trail you see behind an airplane in the sky is called a contrail. It's an artificial cloud made by the exhaust of jet aircraft or from the wingtips.
Gas comes out of airplanes, which causes air pollution, and sometimes changes the sky color.
Most are limited to 35,000 feet or less, but some specialized jet airplanes have flown above 150,000 feet just short of outer space.
The sky
Give your jet steroids.
A formation
The trail left behind in the sky is actually ice, when the air is so cold its below freezing the vapor turns into ice so quickly that it skips the liquid stage and creates a trail in the sky.
No, the "white rows" are simply formed due to water molecules suspended in the air clinging onto the debris left by the combustion from the jet engines.
It is condensated air from engines, due to extremely low temperatures at high altitudes the hot jet stream comming out of turbines get transformed in a white cloud. shivering for several mkinutes
Sky magazine is published by delta airlines as a service to their customers. I have found no connection between sky online and sky magazine.
Condensation trails or 'con trails'.