Revisit the most compelling mysteries explored over the past 15 years of "Ancient Aliens." Experts like Giorgio Tsoukalos, David Childress, William Henry, and Jason Martell engage in conversations around Ancient Astronaut Theory in each episode.
Episodes Season Season 2 · 0/12 Season 1 · 0/12 0/12 watched · 2025 S02E01 Extraterrestrial Teachers 2025-10-06 80m
Across time and cultures civilizations have preserved remarkably similar accounts of sky beings who bestowed the foundational elements of civilization, language, mathematics, architecture, medicine, and astronomy. more S02E02 Extraterrestrial Rituals 2025-10-13 80m
From elaborate ceremonies featuring garments strangely reminiscent of space suits to masked dancers with alien-like faces, human history is rich with traditions that seem to honor mysterious beings from the sky. more S02E03 Gateways to the Stars 2025-10-20 82m
Across the globe, sacred sites have long been viewed as gateways to the stars; might they serve as wormholes, intentionally designed to connect humanity with its ancient alien ancestors? more S02E04 Otherworldly Rulers 2025-10-27 81m
In the ancient world, it was said that the gods did not watch from afar–they ruled among us. Could these dynasties be more than myth? more S02E05 Extraterrestrial Deluge 2025-11-03 81m
Flood myths have endured across cultures for millennia, each retelling events said to have reshaped the Earth; in the Bible, Noah's flood symbolizes divine cleansing; a Sumerian legend tells of King Ziusudra and his survival through a great deluge. more S02E06 The Cryptid Mystery 2025-11-17 81m
Ancient accounts of monstrous creatures appear in cultures across the globe, today, sightings of Bigfoot, the Loch Ness Monster, and Reptilian beings continue, with their bizarre forms and behaviors eerily echoing ancient descriptions. more S02E07 Are We Alone? 2025-11-24 81m
For centuries, humans have pondered a profound question: Are we alone in the universe? more S02E08 Messengers Among Us 2025-12-01 81m
Throughout history, key moments in the evolution of religious belief and moral law have revealed uncanny parallels to accounts of extraterrestrial contact. more S02E09 Alien Reinventions 2025-12-08 81m
From military-grade exoskeletons that grant superhuman strength to advances in visual spectrometers that enhance human perception, today's technologies are rapidly transforming myth into reality. more S02E10 Alien Brotherhoods And Codes 2025-12-15 81m
For thousands of years, secret societies are said to have guarded hidden knowledge of otherworldly origin. more S02E11 Alien Time Travelers 2025-12-29 81m
From ancient legends to biblical accounts, humanity has long been captivated by stories of sudden disappearances and missing time—journeys that seem to defy the very fabric of reality. Could these events be the earliest records of time travel? more S02E12 Extraterrestrial Lairs 2026-01-05 81m
Across continents and cultures, remote caves, mountains, and subterranean labyrinths have long been regarded as secret refuges—hidden homes of gods, giants, and beings not entirely human. more 
