[yesthatjallen]

"Ancient and Medieval artwork depicts what are clearly UFO thingies."

They depict ideas people had of their god, beings, and objects they saw and imagined in the sky. Chariots pulling the sun. Shooting stars. Comets. Celestial beings coming down from heaven.

You're interpreting them through your years of watching sci fi movies.

[GingisK]

...and you through years of listening to debunking. ;-D

I suppose we'll learn more in the afterlife.