Sky History2 Mysteries of Scotland: Home to mysterious stone circles, stories of strange beings and reported sightings, Scotland has always been an epicentre of otherworldly phenomena. (S16, ep 8) 2026-07-22 Aliens And Robots: Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them? (S8, ep 1) 2026-07-22 Aliens B.C: Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology. (S8, ep 2) 2026-07-22 NASA's Secret Agenda: Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash in Roswell. (S8, ep 3) 2026-07-22 Alien Air Force: Since 2017, the Navy has been releasing photos and videos of UFOs. Theorists suggest the images are nearly identical to accounts from centuries ago. (S14, ep 7) 2026-07-22 Alien Evolution: A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin? (S8, ep 5) 2026-07-23 Expect the Unexpected: Explore a long-forgotten network of Native American earthworks, a battlefield mystery in Belgium and a mysterious blood red lake on a Greek island. (S2, ep 3) 2026-07-23 Adam, Gwen and Julie recall personal encounters with UFOs, before experts' theories are put in doubt when we learn that each individual has time missing from their encounters. (S1, ep 2) 2026-07-23 Jaws Of The Enemy: The American Navy is on the offensive and the first strike is on the Solomon Islands. Join the USS Enterprise as it supports the first American invasion. (S1, ep 3) 2026-07-23 Very Extreme Sports: Delve into the origins of sports that were once considered extreme. Games like football and baseball lacked the strict rules that govern them today. (S1, ep 4) 2026-07-23 The Forest Of Death: As the Roman Empire expands its reaches into what is now Germany, its legions are faced with ferocious Germanic tribesmen. (S1, ep 4) 2026-07-23 Secrets of the Sumerians: When the ancient Sumerians built their civilisation, they credited their gods - but were these powerful beings actually extraterrestrial visitors? (S16, ep 7) 2026-07-23 Mysteries of Scotland: Home to mysterious stone circles, stories of strange beings and reported sightings, Scotland has always been an epicentre of otherworldly phenomena. (S16, ep 8) 2026-07-23 Adam, Gwen and Julie recall personal encounters with UFOs, before experts' theories are put in doubt when we learn that each individual has time missing from their encounters. (S1, ep 2) 2026-07-23 Aliens And Robots: Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them? (S8, ep 1) 2026-07-23 Aliens B.C: Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology. (S8, ep 2) 2026-07-23 NASA's Secret Agenda: Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash in Roswell. (S8, ep 3) 2026-07-23 Documentary examining the unsolved murder of TV presenter and newsreader Jill Dando, who was shot outside her house in Fulham, London, in 1999. (S2, ep 2) 2026-07-23 The UFO Superhighway: With so many strange reports of UFOs, animal mutilations and more, a specific latitude north of the Earth's equator has been dubbed 'the UFO Superhighway'. (S16, ep 8) 2026-07-23 Mystery of the Stone Spheres: Mysterious ancient stones shaped into perfect spheres exist around the world - but can they provide clues about humankind's past? (S16, ep 10) 2026-07-23 Holiday Hell: The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships. (S2, ep 6) 2026-07-23 Precious Cargo: The astonishing accounts of four railway journeys that changed history, including the perilous expedition that made a young Winston Churchill world famous. (S1, ep 5) 2026-07-23 In an emotional tribute, witnesses and victims' relatives look back on the murder of 16 children and a teacher at Dunblane Primary School in March 1996. (S2, ep 3) 2026-07-23 The UFO Superhighway: With so many strange reports of UFOs, animal mutilations and more, a specific latitude north of the Earth's equator has been dubbed 'the UFO Superhighway'. (S16, ep 8) 2026-07-23 Mystery of the Stone Spheres: Mysterious ancient stones shaped into perfect spheres exist around the world - but can they provide clues about humankind's past? (S16, ep 10) 2026-07-23 Water World: In a world without humans, water turns from life-giver to destroyer, flooding cities, collapsing dams and triggering ancient forces long kept at bay. (S3, ep 1) 2026-07-23 Shop 'Til You Drop: When humanity disappears, the global retail machine collapses. Malls rot and grocery stores become battlefields for rodents. (S3, ep 2) 2026-07-23 Urban Jungles: In the absence of humanity, the world's most iconic cities are reclaimed by nature, as animals roam free and fire and flood centuries of construction. (S3, ep 3) 2026-07-23 Sands of Time: From Las Vegas to Dubai's Burj Khalifa, as sand, salt and sun dismantle cities, the wastelands quietly take back the ground borrowed. (S3, ep 4) 2026-07-23 Home on the Strange: After humanity ceases to exist, the homes built, ranging from mansions to rural farmhouses, face relentless siege by fire, flood, wildlife and time. (S3, ep 5) 2026-07-24