Ahh I see, and your knowledgable of every earth built flying craft, photographic video disccrepency ( digital included ) atmosperic condition , lack of references that can cause size, speed and proportional innacuracies , and of course personal biases that can affect any human observations.
You may just have the sufficient knowledge to make these determinations , but dollars to donuts , I doubt the vast majority of people are lucky enough to have this knowledge at their disposal.
Personally I believe there is life out there, simply because there is such a huge number of stars and planets, and life has shown itself to be able to thrive in incredibly differing conditions on this planet, it seems unlkely we are the only planet that has life on it.
But I have yet to see anything that I can conclusively say is not of this world.