re: “From the prophet Ezekiel’s sighting of a flying wheel in 593 B.C. . . .”
This so-called “sighting” is always thrown in with the “evidence” that extra-terrestrials visited us in the past. There is no mystery to what Ezekiel saw. He tells the reader what it was - Cherubim from the presence of throne of God, which are winged creatures created by God who are always in His presence. The description of them is difficult to imagine as Ezekiel uses terms to describe them as best he can, plus most Bible scholars agree that the description also uses symbolism, so you have to be careful about taking it literally (hand of a man, wings, whole body full of eyes, etc.).
Further, if you read the entire chapter 10 of Ezekiel, you realize that the whole point of what he was envisioning was that the presence, the glory, and the Spirit of God was leaving the temple. Israels’ sin was so great that God’s glory left the temple. It was a message of judgement against the people of Israel at that point in time.
So, it is clear this has NOTHING to do with extra terrestrials or a flying saucer.
Yes, the “wheel” appears again during his vision of the coming millennium Temple.