I’m illustrating absurdity by being absurd... the overwhelming influx of the “it’s contrails, and anyone who thinks it’s anything else is and idiot” crowd here is enough to make one suspicious that it’s plausible to be something other than an airplane.
Of course there is no "it's a missile, and anyone who thinks it's anything else is and idiot" crowd. /s
If your mind is willing to consider the plane explanation, here is one of the best threads:
http://www.freerepublic.com/focus/f-news/2625121/posts?q=1&;page=1
If you are so inclined, read the whole thing and look at the pics and videos and come back and tell us what you think. If not, that's fine.