Sky History2 The Hidden Empire: Ancient Astronaut theorists suggest that China, with its history of technological advancement and isolationism, could have been the home of alien beings. (S9, ep 10) 2026-08-13 Great Cities: Fly over metropolises, discovering an important urban centre that is sinking, ruins buried under the desert and a ghost town on the edge of the Gobi Desert. (S3, ep 8) 2026-08-13 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. (S1, ep 6) 2026-08-13 In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide. (S1, ep 2) 2026-08-13 Precarious Products: The everyday products that are way more dangerous than they seem to the unsuspecting eye. What were the most ill-advised and risky household products? (S1, ep 7) 2026-08-13 Rebellion And Betrayal: Marcus Aurelius inherits a rapidly growing Roman Empire, embroiled in a war on two fronts. But can he bring peace and prosperity back to the Empire? (S1, ep 7) 2026-08-13 The Genius Factor: History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. (S7, ep 5) 2026-08-13 Secrets Of The Mummies: Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth? (S7, ep 6) 2026-08-13 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. (S1, ep 6) 2026-08-13 The Visionaries: Ancient Astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement. (S9, ep 6) 2026-08-13 The Next Humans: As science turns towards augmenting humanity with technology, theorists suggest that we are merely following the path of our alien creators. (S9, ep 7) 2026-08-13 The Wisdom Keepers: Ancient Astronaut theorists look at the Aborigine legend of Dreamtime, and ask if these stories hold the proof that aliens created life on Earth. (S9, ep 8) 2026-08-13 Christopher Foster: The brother of millionaire Christopher Foster joins those trying to understand why he killed his wife and daughter in Shropshire in 2008. (S4, ep 5) 2026-08-13 Alien Messages: Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens. (S7, ep 7) 2026-08-13 The Great Flood: Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again? (S7, ep 8) 2026-08-13 Doomsday Hieroglyphs: New research and modern computer graphics shed light on our doomed future as forecast in centuries gone by. Can we avoid our fate by heeding these warnings? (S1, ep 4) 2026-08-13 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. (S1, ep 2) 2026-08-13 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. (S1, ep 1) 2026-08-13 Colin Ireland: The ex-wife and former friends of Colin Ireland cast new light on the psyche of the Southend serial killer who terrorised the London gay scene in 1993. (S4, ep 6) 2026-08-13 Alien Messages: Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens. (S7, ep 7) 2026-08-13 The Great Flood: Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again? (S7, ep 8) 2026-08-13 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 6) 2026-08-13 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 7) 2026-08-13 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 8) 2026-08-13 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 9) 2026-08-13 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 10) 2026-08-14 Stone Cold Mysteries: Look inside curious dwellings in the Peruvian Andes, visit a sacred monolith in Wyoming's Black Hills and spot an immovable waterfall in Mexico. (S3, ep 9) 2026-08-14 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. (S1, ep 7) 2026-08-14 In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal. (S1, ep 3) 2026-08-14 Hidden Temple of Athribis and Ice Age Footprints: From an Egyptian temple carved into cliffs to the world's oldest ritual hunting sites, discoveries are redefining history. (S2, ep 3) 2026-08-14 King Thutmose II Tomb and Secret Saudi Gates: Look inside the tomb of King Thutmose II and get clues about Egypt's pharaohs, then dust off stone structures in Saudi Arabia. (S2, ep 4) 2026-08-14 Alien Messages: Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens. (S7, ep 7) 2026-08-14 The Great Flood: Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again? (S7, ep 8) 2026-08-14 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. (S1, ep 7) 2026-08-14 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 6) 2026-08-14 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 7) 2026-08-14 Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 8) 2026-08-14 Colin Ireland: The ex-wife and former friends of Colin Ireland cast new light on the psyche of the Southend serial killer who terrorised the London gay scene in 1993. (S4, ep 6) 2026-08-14 The Vanishings: Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation? (S7, ep 9) 2026-08-14 Hidden Pyramids: Experts investigate ancient man's apparent obsession with building pyramids, and whether extra-terrestrials may have helped with their construction. (S7, ep 11) 2026-08-14 Fatima's Lost Prophecy: In 1917, three young shepherd children from Fatima, Portugal, claimed to be instruments of divine prophecy. Was there truth to their allegations? (S1, ep 5) 2026-08-14 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. (S1, ep 4) 2026-08-14 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. (S1, ep 3) 2026-08-14 Witnesses and terrorism experts revisit May 2013, when soldier Lee Rigby was murdered by two religious extremists near his barracks in Woolwich. (S5, ep 2) 2026-08-14 The Vanishings: Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation? (S7, ep 9) 2026-08-14 Hidden Pyramids: Experts investigate ancient man's apparent obsession with building pyramids, and whether extra-terrestrials may have helped with their construction. (S7, ep 11) 2026-08-14 Ancient Global Warming: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (1 of 5) 2026-08-14 Rome's Rise and Fall: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events through a scientific lens to dispel the myths. (2 of 5) 2026-08-14 The Darkest Age: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (3 of 5) 2026-08-14 God's Holy Warriors: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (4 of 5) 2026-08-14 Medieval Mystery: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (5 of 5) 2026-08-15