(If you heard about the supposed rocket seen off the California coast the other evening, you'll know what I'm talking about - otherwise don't waste your time.)
It was pretty unambiguously the contrail of an airplane, seen head-on. How do we know this?
1) If it were a rocket, it would have had to be the slowest rocket ever. Even from twenty miles away the launch at Vandenberg that I saw recently positively hauled ass into the sky.
2) People north and south on the coast from the sighting area didn't report seeing anything strange. Why? Because to them the same cloud would have looked like a normal contrail.
3) There were likely boats (fishing and otherise) closer to it, maybe even under it. Granted, we don't know if any vessels were in the vicinity. However, the fact that there were no reports from any boats (who might even have heard it if it was a rocket - rockets are loud) is another point off the missile hypothesis.
4) Similar things have happened before, and they were contrails also. (See the link at the end of this post.)
5) Yes, it glowed even after sunset. No kidding! That doesn't mean the cloud was burning rocket exhaust, it just means it was high up, just after sunset. When you're significantly off the surface of the Earth, you get sunlight after sunset. This is true even at the summits of tall, steep mountains. Ever heard of alpenglow?
Needless to say, "Cloud Not From Missile" isn't a good story, so it's not national news. If you still don't believe me, read this pilot's blog. He's even predicted exactly which flight it is, and a) invited the press to film it at the same time, from the same location, with the same weather conditions, and b) asked the chemtrails/conspiracy nuts to give him other evidence. Just a guess - the fact that people notice it this week might have to do with daylight savings.
So calm down dummies.