There is also another thread that points to a site debunking the missile theory. The site contains dozens of photos of interesting aircraft contrails, a couple of which look almost exactly like this one. They even have a nice drawing of how the curvature of the earth alters our perception of these things. It’s pretty interesting, but I don’t remember which thread it’s on. There are just too many.
I’d bet big money that it is a contrail from an airplane at high altitude.
Frankly, I’m not coming down on either side yet, but it does put me off to see people trying to claim one thing or another as the only answer.
What if there were ten million photos of trails produced by aircraft that looked just like a missile? Would that mean that every trail that looked like that had to be produced by an aircraft?
This is the type of discussion that habitually frequents these threads. Know it alls always pop up to hawk their version of truth, regardless of alternative possibilities.
Could it be an aircraft trail? Yes. Could it be something else? Well, yes. Do we really know right now? Well, no.