Pilots & Astronauts: When it comes to identifying mysterious objects in our skies, few people are more qualified than pilots and astronauts - but are sightings common? (S1, ep 3)
Schedule
- Alien Files: Unsealed
UFO Zones: Journey to the world's hottest UFO zones, where physical and paranormal phenomenons and unidentified objects and aliens are reported with alarming frequency. (S3, ep 17)
- Alien Files: Unsealed
Countdown To Disclosure: Evidence suggests the world's governments could be on the verge of announcing everything they know about UFOs. What will this mean for our society? (S3, ep 18)
- Alien Files Reopened
A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth. (S1, ep 2)
- UFOs: The Lost Evidence
Deep Sea Encounters: For decades, extraterrestrial research has been directed to the skies - but researchers believe that UFOs may also be inhabiting our oceans. (S1, ep 2)
- Close Encounters
Four US Air Force reservists are pursued by odd lights. Constable Alan Godfrey loses consciousness when he investigates a strange disruption in West Yorkshire. (S2, ep 11)
- Close Encounters
In 1980, an Australian rancher witnesses a hovering UFO that shoots out a black tube-like object. A French biologist is left stunned when he spots a saucer-shaped craft in 1982. (S1, ep 11)
- Bone Detectives
Beneath a shopping arcade in Leeds' city centre, archaeologists discovered a Roman-era Christian cemetery containing the remains of 317 individuals. (S1, ep 4)
- Instruments Of Death
The Great War - the Somme: Presenter Karl Ude-Martinez takes a tour of the weapons used during the Battle of the Somme in 1916, including machine guns and poison gas. (S1, ep 4)
- Mysteries From Above
Mysterious Monuments: Walk along ancient pathways on Easter Island and discover designs carved into Asia's Eastern Steppe as you explore the planet's most puzzling structures. (S2, ep 7)
- Mystery Places
Check out the Chinese railway that runs through residential buildings, take a tour of a mysterious forest in Poland and explore amazing underground locations around the world. (S1, ep 17)
- Weird Or What?...
Weird Animal Behaviour: Three extraordinary stories about the supersensory power of animals, including a psychic octopus that correctly predicted multiple World Cup winners. (S3, ep 5)
- Evidence Of The Unexplained
Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 3)
- Alien Files: Unsealed
Top Civilian Encounters: From mass sightings in the sky to reports of alien probes found in human bodies, explore the ten most disturbing extraterrestrial encounters ever. (S3, ep 19)
- Alien Files: Unsealed
Alien Achilles Heel: Many believe aliens are already here on Earth. Could they be plotting an attack? And if so, can humans survive their weapons' terrifying capabilities? (S3, ep 20)
- Alien Files Reopened
A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth. (S1, ep 3)
- UFOs: The Lost Evidence
Pilots & Astronauts: When it comes to identifying mysterious objects in our skies, few people are more qualified than pilots and astronauts - but are sightings common? (S1, ep 3)
- Close Encounters
A hitchhiker is terrified when lights appear to attack him. A sighting in France becomes one of the most investigated cases in UFO history. (S2, ep 12)
- Close Encounters
Teens on a Christian retreat spot an object land on a hill, emitting solid beams of light in 1972. In 1989, two Belgian police officers chase a triangular craft across fields. (S1, ep 12)
- Bone Detectives
Scotty Moore travels to the northern coast of Peru, where archaeologists have discovered a teenage girl buried in a strange place just outside an empty tomb. (S1, ep 5)
- Instruments Of Death
Queen Boudicca's Revolt: Revisiting the bloody British uprising against the Romans, presenter Karl Ude-Martinez tests out swords, spears and armour. (S1, ep 5)
- What On Earth?
Circles of reindeer appear in the remote tundra of Sweden. Experts investigate if this strange event could be evidence of fatal aftershocks from the Chernobyl nuclear disaster. (S7, ep 3)
- Mysteries From Above
Mysterious Monuments: Walk along ancient pathways on Easter Island and discover designs carved into Asia's Eastern Steppe as you explore the planet's most puzzling structures. (S2, ep 7)
- Mystery Places
Check out the Chinese railway that runs through residential buildings, take a tour of a mysterious forest in Poland and explore amazing underground locations around the world. (S1, ep 17)
- Weird Or What?...
Weird Animal Behaviour: Three extraordinary stories about the supersensory power of animals, including a psychic octopus that correctly predicted multiple World Cup winners. (S3, ep 5)
- Evidence Of The Unexplained
Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 3)
- What On Earth?
Hitler's 400-foot secret supergun, something big and weird in the Atlantic and inside the Frankenstein tomb of horrors. (S7, ep 17)
- Secrets In The Dark
Priestess with the Golden Eye: In the ancient Burnt City of Shahre Sukhteh, Iran, archaeologists uncover a remarkable discovery. The oldest known prosthetic eye, made of gold. (S1, ep 4)
- Secrets In The Ice
Ghosts of the Mountain Pass: Melting ice reveals extraordinary clues to the past, from a lost mountain pass in Norway to ancient mysteries uncovered in Peru and beyond. (S5, ep 2)
Schedule from the public TV guide at sky.com, refreshed daily. Times in Europe/London.