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originally posted by: DerekB
Well, if I ever see the ufo's around the trails accounted and explained for, and I never see any of them below cumulus clouds, I may likely change what I believe about them. The old documentation is a big factor, but that doesn't mean that what was contrails then is contrails now. If they are the same trails from the past, where are all the ufo's flying around them like the ones that are seen today?
originally posted by: DerekB
a reply to: mrthumpy
You should really research Tricky Micks website called "contrail science".
Contrails typically form above 30,000 feet
contrailscience.com...