Sure, a lot of times people have seen some peculiar things in the sky that are hardly paranormal.
However, there are many people throughout history that have seen & photographed various kinds of unknown crafts.
http://artbell.com/paranormal-central-ufo-report-7-19-2015
3rd Ph of M
https://www.youtube.com/watch?v=zjaN3Emk0oc
http://www.aliens-everything-you-want-to-know.com/AliensinAncientArt.html ,
http://www.ancestryofman.com/art ,
http://www.crystalinks.com/ufohistory.html ,
http://theghostdiaries.com/ufos-and-aliens-in-ancient-art ,
http://www.thelivingmoon.com/49ufo_files/03files2/UFOs_in_Art_01.html ,
http://www.xfacts.com/old
A lot of people just aren't interested or don't have much of a concept of curiosity to look deep into the legends, myths and mysteries of reality.
http://timesofindia.indiatimes.com/india/10000-year-old-rock-paintings-depicting-aliens-and-UFOs-found-in-Chhattisgarh/articleshow/38435091.cms
https://www.google.ca/search?q=ufos+depicted+in+ancient
