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10 February 2013, 20:34
I am not convinced either, I watched vapor trails when I was a kid,.. and they can spread out a great deal,... its the wind that will determine if a vapor trail spreads or not
On a clear blue summers day the sky can be streamed with vapor trails up here, and there is no reason for it this far north,...I think it is just aircraft vapor, the clearer the sky the more trails you see as aircraft stack up at different heights
On a clear blue summers day the sky can be streamed with vapor trails up here, and there is no reason for it this far north,...I think it is just aircraft vapor, the clearer the sky the more trails you see as aircraft stack up at different heights
A major part of survival is invisibility.