The term'chemtrails'is a popularised expression, and there is no scientific evidence to support their existence . " The house leader went on to say that " it is our belief that the petitioners are seeing regular airplane condensation trails, or contrails ."
22.
A . Contrails, or condensation trails, are clouds of ice crystals formed when hot, moist air from aircraft engines mixes with cold, drier air in the upper atmosphere, said Dr . Owen Brian Toon, professor in the program for atmospheric and oceanic sciences at the University of Colorado in Boulder.
23.
We were flying west over Estes, Texas, about 8 a . m . when Mangan and I saw what appeared to be the condensation trail of another aircraft in front of and slightly above us, travelyog ie were watching a trio of jet fighters decelerating away from an aerial refueling tanker.
24.
Contrails, or condensation trails, are " streaks of condensed water vapor created in the air by an airplane or rocket at high altitudes . " They are the result of normal emissions of water vapor from piston and jet engines at high altitudes in which the water vapor condenses into visible clouds.
