In most operational modes, most of the craft reportedly have an ionization layer of air and ionized particles etc. covering their skin which hinders sharp photos.
And that doesn’t even get into other aspects of the technologies which hinder, prevent, preclude sharp photos.
However, there will be relatively sharp photos increasingly surfacing. There are already more on the net than you seem to be aware of.
But these photos are never of those supposedly having landed..or seen up close. Those that are generally are proved a hoax.
I’ve seen many on the net and am not convinced Quix. That is to not to say we don’t know what is out there in outer space, because we really don’t. Is there a possibility...of course...but I have yet to be convinced that those we know of are alien spacecraft.
I am sceptic of course, but that does not mean if further evidence that could be well proven and documented I couldnt change my view.
THe Lord says in the end-times there would be strange happenings seen in the heavens....but He does not say these will be aliens from outerspace.