Episode 1
Aired Jan 15, 2026
Skulls of the Gods
In every corner of the world, archaeologists have found strange, elongated skulls; did our ancestors modify the shape of their skulls to resemble extraterrestrial visitors?; and might it even be possible that some of these skulls are of otherworldly origin?
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Episode 2
Aired Jan 22, 2026
Egypt's Lost Pyramids
High above the Giza Plateau stands Egypt's most mysterious ancient site: the Lost Pyramid of Abu Rawash; today, it lies in ruins, but some researchers believe these stone blocks hold profound secrets about an extraterrestrial civilization that existed in Ancient Egypt long before our recorded history.
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Episode 3
Aired Jan 29, 2026
Island of the Gods
Oceania contains remote Pacific islands featuring massive stone structures and strange statuary; local legends describe otherworldly visitors, adding to the mystery of these ancient sites.
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Episode 4
Aired Feb 5, 2026
Extraterrestrial Engineering
Host Giorgio Tsoukalos explores ancient structures that defy conventional explanation; from the precisely cut stone blocks at Puma Punku to the temples of Malta and the megalithic city of Nan Madol, could these mysterious sites contain evidence of extraterrestrial contact in the distant past?
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Episode 5
Aired Feb 26, 2026
UFO Hot Spots
Found along the California coast to New York's Hudson Valley and Northern England to Southern Chile, could these mysterious locations provide evidence of an extraterrestrial presence on Earth?
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Episode 6
Aired Mar 5, 2026
Mysterious Monuments
Host Giorgio Tsoukalos explores the series archives to investigate mysterious moments that just might contain an extraterrestrial connection; from a stone circle in Turkey that challenges the timeline of human history to gigantic stone spheres in Bosnia and Egypt's most unusual tombs, could these monuments provide proof of extraterrestrial visitation?
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Episode 7
Aired Jun 11, 2026
Underwater Alien Bases
Examining maritime folklore regarding aquatic entities and reviewing contemporary reports of unidentified aerial phenomena over oceanic regions and investigating whether deep-sea environments host undocumented anomalies.
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Episode 8
Aired Jun 18, 2026
Secrets of the Vedas
Ancient scriptures called the Vedas form the foundation of Hinduism. These manuscripts are thousands of years old and describe a time when Earth was inhabited by gods who traveled the skies in flying machines and possessed extraordinary technology. Might the secrets of the Vedas reveal the truth about extraterrestrial contact in the distant past?
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Episode 9
Aired Jun 25, 2026
Wars of the Gods
Examining alternative history theories regarding ancient myths of celestial conflicts and investigating whether geological formations match the descriptions of ancient battlefields found in folklore.
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Episode 10
Aired Jul 2, 2026
UFO Sightings
Host Giorgio Tsoukalos probes the series archives to present the most compelling UFO SIGHTINGS. From footage of extraordinary aircraft taken by fighter pilots to a strange object filmed flying over a military base in Iraq and mysterious glowing orbs that are reported all over the world, are these remarkable sightings evidence of extraterrestrial visitation?
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Episode 11
Aired Jul 9, 2026
Alien A.I.
Examining how researchers use artificial intelligence to analyze historical data and evaluate claims of extraterrestrial activity.
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Episode 12
Aired Jul 16, 2026
Hidden Messages
Host Giorgio Tsoukalos examines series archives to investigate theories of historical extraterrestrial contact; the broadcast reviews aerial geoglyphs, crop circles and mathematical codes embedded in ancient global architecture to assess claims of early astronomical communication.
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Episode 13
Aired Jul 23, 2026
Secrets of the Amazon
A documentary examines how researchers utilize remote-sensing technology, such as lidar, to map previously undocumented ancient urban networks beneath the Amazon canopy; the broadcast investigates alternative history theories regarding potential extraterrestrial influence at these newly mapped archaeological sites, evaluating whether the design of these pre-Columbian settlements aligns with ancient astronomical patterns or cosmic structures.
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Episode 14
Aired Jul 30, 2026
Alien Investigators
Host Giorgio Tsoukalos opens the series archives to celebrate ALIEN INVESTIGATORS that have been brave enough to ask the question, Are we alone in the universe? From a hardened skeptic turned true believer, a fearless reporter who investigated high strangeness, and a hotel manager who discovered otherworldly clues hidden in the distant past, could these investigators have uncovered proof of an alien presence on Earth?
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Episode 15
Aired Aug 6, 2026
Africa's Extraterrestrial Contact
The origins of humanity can be traced back to Africa, and some of the oldest religious traditions across the continent describe mysterious beings who descended from the sky in thunderous vehicles. Could it be that the ancient mythology of Africa describes our first encounters with extraterrestrials?
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Episode 16
Aired Aug 13, 2026
Spy Gadgets
In the jungles of Vietnam, the U.S. military built sensors that could sniff out hidden enemies; a CIA operation hauled a nuclear-powered surveillance device to the summit of a Himalayan mountain; and at the height of the Cold War, the Soviet Union slipped a covert listening device inside a seemingly innocent gift presented by schoolchildren to the United States; sometimes the most dangerous weapon in the room is the one nobody realizes is there.
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