What are the white trails behind airplanes? This video explains how contrails form, why they sometimes disappear, and why they can spread across the sky under certain conditions. You will learn how jet engine exhaust interacts with cold air, how humidity affects contrail behavior, and how high-altitude winds shape what we see from the ground.
The video also clears up common misunderstandings and explains the role of air traffic and atmospheric layers. If you have ever been curious about those white lines overhead, this explanation makes the science simple and clear.
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