Divorced from Enoch in Latin and Greek Christianity, incorrect understandings of
Genesis 6:1-4, 1 Peter 3:18-20, 2 Peter 2:4-10, Jude, and other passages meant an ignorance in the Church and culture in general concerning the events before the flood. This pervasive ignorance has left a vacuum into which ancient alien theories are now aggressively entering.
It is intriguing to watch today in popular culture we seem to be witness to the birth of a new mythology in which pre-flood artifacts, building projects, and events are being explained in terms of ancient aliens and astronauts. These ideas might seem more palatable to people in a technological age, but they are mythology nonetheless.
Because of being separated from the writings of Enoch the prophet, the seventh from Adam, men make up fables which they would not do if they had the foundation of the doctrines of the first book of "last things/eschatology", which is the Book of Enoch.
But also in the future, according to Enoch, men will invent more fables in the tribulation because they are not familiar with book of Enoch...
For instance, men will worship stars as gods, in those days to come, when the earth is turned upside down, is moved out of her place, jumps about as a chased roe, and seasons appear backwards, and stars change...
Enoch 80:
The Book of Enoch, Translated by Robert H. Charles, 1912
2And in the days of the sinners the years shall be shortened,
And their seed shall be tardy on their lands and fields,
And all things on the earth shall alter,
And shall not appear in their time:
And the rain shall be kept back
And the heaven shall withhold it.
3And in those times the fruits of the earth shall be backward,
And shall not grow in their time,
And the fruits of the trees shall be withheld in their time.
4And the moon shall alter her order,
And not appear at her time.
5And in those days the sun shall be seen and he shall journey in the evening on the extremity of the great chariot in the west
And shall shine more brightly than accords with the order of light.
6And many chiefs of the stars shall transgress the order prescribed.
And these shall alter their orbits and tasks,
And not appear at the seasons prescribed to them.
7And the whole order of the stars shall be concealed from the sinners,
And the thoughts of those on the earth shall err concerning them,
And they shall be altered from all their ways,
Yea, they shall err and take them to be gods.
8And evil shall be multiplied upon them,
And punishment shall come upon them
So as to destroy all."