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- Season 19 overviewJan 6-Sep 15, 202320 episodesSeason 19 episodes20. The Top Ten Alien Petroglyphs Sep 15, 2023
- "Ancient Aliens" is looking at alien petroglyphs; from strange, human-like figures to flying craft.
- 19. The Top Ten Mysteries of the Deep Sep 8, 2023
- Counting down 10 mysteries of the deep, from sunken continents to ruins on the ocean floor.
- 18. The Power of the Talisman Aug 25, 2023
- Talismans are seen to provide protection, good fortune and embody a higher power.
- 17. The New UFO Hunters Aug 18, 2023
- Unidentified flying objects are openly investigated by the government.
- 16. The Gods of Greece Aug 11, 2023
- Whether the gods of Greece were extraterrestrial visitors to Earth.
- 15. Edgar Cayce: The Sleeping Prophet Aug 4, 2023
- Edgar Cayce, a modern-day prophet from the hills of Kentucky, becomes a worldwide sensation.
- 14. The Top Ten Alien Craft Jul 21, 2023
- Counting down the top 10 alien craft, from V-shaped objects to orbs of light to flying saucers.
- 13. The Top Ten Mysterious Islands Jul 14, 2023
- "Ancient Aliens" is counting down the world's top 10 mysterious islands, including homes to giants.
- 12. The Top Ten Mysterious Devices Jul 7, 2023
- Disks found in a cave in China; an ancient Greek computer; a crystal skull unearthed in Mexico.
- 11. The Top Ten Pyramid Sites Jun 30, 2023
- "Ancient Aliens" is counting down the world's top 10 pyramid sites, from Peru to Egypt.
- 10. The Giants of Malta Mar 17, 2023
- The ancient mysteries that exist on the islands of Malta could be connected to alien visitation.
- 9. Aliens in Our Airspace Mar 10, 2023
- Since the dawn of aviation, pilots have experienced unexplainable events in the sky.
- 8. The Mysteries of Alaska Mar 3, 2023
- The Alaskan wilderness is known for disappearances, electromagnetic anomalies and UFO sightings.
- 7. Close Encounters of the Fifth Kind Feb 24, 2023
- The possibility of direct human contact with extraterrestrial life.
- 6. Cosmic Impacts Feb 17, 2023
- Evidence could reveal that celestial objects have been directed to Earth by alien intelligence.
- 5. The MUFON Files Feb 10, 2023
- The Mutual UFO Network is devoted to the scientific investigation of unidentified aerial phenomena.
- 4. The Power of the Obelisks Feb 3, 2023
- Ancient astronaut theorists suggest that the obelisks may have served a technological purpose.
- 3. Mystery of the Lost Civilization Jan 20, 2023
- The discovery of Karahan Tepe in southern Turkey turns the world of archaeology on its head.
- 2. The Crop Circle Code Jan 13, 2023
- More than 10,000 crop circle formations have been documented in over 50 countries.
- 1. The Hotspot Connection Jan 6, 2023
- Up to 70% of UFO sightings happen in hot spots; what attracts UFOs to these locations.