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I understand that Jet Trails form when the hot exhaust from the jet turbine engines get in contact with the cold air found in altitudes of 20,000 ft. and above. It is the same principle as when the warmer air from human breath get in contatc with the ambient air on a cold winter day. I hope this helps you in any way to undersatnd the jet trail formation.

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16y ago

What else can I help you with?