Ancient astronauts (or ancient aliens) refers to a pseudoscientific set of beliefs that hold that intelligent extraterrestrial beings (alien astronauts) visited Earth and made contact with See more

Paleocontact or "ancient astronaut" narratives first appeared in the early science fiction of the late 19th and early 20th centuries, … See more

Ancient astronauts have been addressed frequently in science fiction and horror fiction in many different media. In a 2004 article in See more

• Archaeoastronomy
• Extraterrestrial hypothesis
• First contact (science fiction)
• List of topics characterized as pseudoscience See more

Various terms are used to reference claims about ancient astronauts, such as ancient aliens, ancient ufonauts, ancient space pilots, paleocontact, astronaut- or alien gods, or paleo- or biblical-SETI (search for extraterrestrial intelligence).
Believers in such … See more

Among scientists, the consensus is that the ancient astronaut hypothesis is not impossible, but unjustified and unnecessary. The "mysteries" cited as evidence for the hypothesis can be explained without having to invoke ancient astronauts; … See more

Many publications have argued for the ancient astronauts hypotheses. Notable examples include these:
• 1919: Charles Fort (book, The Book of the Damned See more