[noiseman]

Actually, I’m rather agnostic on the subject but leaning toward there being a there there...based on some of my military experience.😎

I don’t think they are being operated by aliens from other planets, but the fact that incomprehensibly advanced devices not created by humans are flying through our skies is now a fact. The big question is where are they from and who is either in control of them or piloting them? The possibilities I see are some kind of transdimensional phenomenon, demonic activity, or even (but probably less likely) time travelers.

J. Allen Hynek, the well-known astronomer who first served as a debunker on the Air Force’s Project Blue Book, eventually became convinced that the phenomenon is real. I read his excellent book, “The UFO Experience: A Scientific Inquiry” when I was a kid. It is a very objective and methodical analysis of the phenomenon. Toward the end of the book, he concludes that the more he analyzed UFO incidents, the more they seemed like a spiritual phenomenon rather than a purely physical one. Hynek was also the one who devised the system to classify UFO encounters by “kind” (close encounters of the third kind, for example).

One thing is clear: Whatever the origin of these things, their existence indicates that what we think we understand about the world and our place in it is extremely limited. The true nature of reality is far beyond what we can imagine.

[Bonemaker]

Because of the maneuverability and seeming defiance of the laws of physics, I can’t get the earth’s magnetic forces out of my head. How to harness it is the question.

[cgbg]

“The true nature of reality is far beyond what we can imagine.”

I am going to add two more to your “possible” list—that science says is “impossible”.

First was developed by Carl Jung in his book:

https://www.amazon.com/Flying-Saucers-Modern-Things-Skies/dp/0691018227

He argued that UFOs and aliens were manifestations of the human collective consciousness.

Second is the Gaia hypothesis—or some variation—that the planet itself is intelligent and can manifest these things.

There is no way science in its current state can test such a hypothesis. It would be like ants debating whether humans are intelligent.