Season 5 of ANCIENT ALIENS from HISTORY continues to explore the fascinating field of “Alien Astronaut” theory. Did intelligent aliens roam the Earth thousands of years ago? Could they have visited our world from the Orion Nebula? Were monumental structures like the pyramids created to worship or guide them, and did they help humans develop other advanced technologies? Researchers explore evidence of these mysterious phenomena in ancient texts and relics, including alien abductions documented in the Hebrew Bible, Egyptian hieroglyphs depicting the use of light bulbs, enormous cryptic markings on a Peruvian desert plateau, and many more. Do these phenomena represent an extra-terrestrial agenda? From fascinating artefacts to first-hand accounts, this compelling inquiry into an alternate history presents grounded, historical insights while challenging our collective understanding of ancient civilisations.