Alfador wrote:Could easily be either. "Missiles" don't really leave trails like that either to be honest. Not most anyway. The whole point of a missile is to damage something, and it's easier to damage something when they don't see it coming. Besides, it would probably have to be smoke and not a contrail if it was really a missile, as an actual con-trail, as they keep calling it, typically only happens to jet engines if I'm not mistaken. Missiles are generally solid fuel rockets.
Your average liquid-fueled missile/rocket leaves a contrail... hell, most solid rocket boosters do too. Think about the space shuttle...
Some SAM systems are designed not to leave a trail.
AZhitman wrote:If it's a missile, it's the slowest one ever built.
Big missile, far away, maybe? The shuttle from a distance practically crawls through the sky, and it's moving at a similar speed to an ICBM.