Granted I will be taking a few liberties with this one, but viewed through a certain lens various events described in the Bible could have an extraterrestrial, rather than supernatural, source. Again with both of these, you must take as a matter of faith that what is being described here actually happened and is not the result of an active imagination.
For this article, I will be focusing exclusively on the Book of Ezekiel which takes place between 593 and 571 BCE (Before Common Era). The book records the six visions of the prophet (who is assumed to be the author), who is in exile in Babylon. This first excerpt describes an object landing near the Chebar Canal in ancient Chaldea (modern day Iraq) in the fifth year of the Jewish captivity under Nebuchadnezzar II.
“As I looked, behold, a stormy wind came out of the north, and a great cloud, with brightness round it, and fire flashing forth continually, and in the midst of the fire, as it were gleaming bronze.”
Odd, very odd. The prophet continues.
“And from the midst of it came the likeness of four living creatures. And this was their appearance: they had the forms of men, but each had four faces, and each of them had four wings. Their legs were straight, and the soles of their feet were like the sole of a calf’s foot: and they sparkled like burnished bronze. Under the wings on their four sides they had human hands… each had the face of a man in the front; the four had the face of a lion on the right side… the face of an ox on the left side, and …the face of an eagle on the back… And their wings were spread out above; each creature had two wings, each of which touch the wing of another, while two covered their bodies. And each [creature] went straight forward without turning as they went…And the living creatures darted to and fro, like a flash of lightning.”
Even more odd. Some claim this is a description of the angelic order of Cherubs. But if you discount those creatures from existence, what else might they be describing? Some hybrid creature, created to mingle on the planet? Or natural shape-shifters. The description goes on.
“Now as I looked at the living, I saw a wheel upon the earth beside the living creatures, one for each of the four of them. As for the appearance of the wheels and their construction: the appearance was like the gleaming of a chrysolite [a yellowish-green gemstone]… being as it were a wheel within a wheel…. The four wheel shad rims and they had spokes, and their rims were full of eyes round about. And when the living creatures went, the wheels went beside them; and when the living creatures rose from the earth, the wheels rose.”
Ezekiel by Michelangelo from the Sistine Chapel panel
Are these spectral visitors or extra-terrestrial? The creatures approach Ezekiel, declare him to be the messenger of his people and is taken on board the craft (“the Spirit lifted me up…I heard the sound of the wheels… that sounded like a great earthquake”) and he is transported to Tel-abib (which translates to Spring Mound) to proselytize to his fellow Jewish exiles.
For more weirdness try Across the Wounded Galaxy by Rex Hurst