• graham1@lemmy.world
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    10 hours ago

    Reminder that “”“chemtrails”“” behind planes in the sky are water condensation trails (also called contrails) which forms due to the air pressure drop over the top of the wing. It is the same phenomenon as the small cloud produced by the pressure drop when quickly opening a can of a carbonated beverage

    • reptar@lemmy.world
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      2 hours ago

      Most of it is just engine exhaust, which has a lot of water vapor, mixing into the very cold air.

      What you’re talking about happens as well, but that’s not what you’re seeing in the sky for the most part.