Attributing such things to another solar system is a fallacy that everything that's out there can be explained by the little that we already know. It's no different than when people of past ages explained stars as little holes in the sky dome: it was simply the limit of their understanding. It's a comfortable self-delusion. Their origin can be as well under ground in our planet in some unimaginable to us way. Even appealing to the logic: if they built a flying thing to which laws of physics don't seem to matter, why would they live like us, on a surface of some rock in deep space?

Completely agreed. The null hypothesis on that has always fallen on extraterrestrials, assuming we know everything about every single cubic meter on earth, which is anthropomorphically flawed. I never really speculate on what it was, exactly, because i don't have enough data. My first assumption is man-made, not extra-terrestrial or otherwise. It could have been ball lightning or some deception system for false radar return as someone mentioned earlier, but this thing had size to it. it wasn't a reflection. I've seen (vary rare video) examples of ball lightning also, but they don't move like what i saw.