Sky History 2 Wednesday

Ancient astronaut theorists explore the idea that meteorites could be pieces of extraterrestrial technology

A team of experts looks into the Orion constellation to investigate whether this could have been an entry point for aliens visiting Earth

Garth Barnard investigates the likely cause of an accident in Nebraska in 1944, when a transport plane crashed during a violent storm

The design, service and loss of the Achille Lauro, a ship which suffered two serious collisions, multiple onboard fires and was even hijacked by PLO terrorists in 1985

Between December 1941 and May 1942, Singapore fell, the Wannsee Conference was held in Berlin and a single event in the Pacific transformed the war into a total global conflict

Giorgio Tsoukalos examines a curious passage in ancient test The Zohar, which describes seven Earths

Giorgio Tsoukalos examines the notion that extraterrestrials could have left clues to the universe's mysteries

The actor continues his adventure in Scapa Flow, plunging down on the wrecks of a German warship and an experimental submarine aircraft called the M2

Dan Jones explores the turbulent history of six of Britain's most famous castles, his journey commencing with a visit to Edinburgh Castle

Professor Alice Roberts explores the medieval history of Lincoln, visiting the cathedral that was once the world's tallest building

Part two of two. An exploration of ancient Greece and the great sites of Athens, Delphi, Olympia and Epidaurus. These form some of the greatest sites in antiquity

The ill-fated ocean liner Titanic, which sank on its maiden voyage from Southampton to New York in April 1912

The contestants next challenge is to make drinking glasses and decanters in a combination of fashion and function

Towels and toothpaste come to life on a grand scale as the remaining contestants reimagine everyday bathroom objects as whimsical works of pop art

Alice Roberts travels to Bamburgh, Northumberland, to learn about the generations of Anglo Saxons who lived there, and visits a pioneering project in Kent

A look at why the Celts moved from prosperous cities into smaller fortified settlements and how this triggered their decline in Central Europe

A look at UFO sightings, terrifying abductions and other bizarre occurrences, casting new light on historic cases

A photograph of a UFO hovering over Holloman Air Force Base in New Mexico and a cabin built in a supposedly anomalous spot that defies gravity in the Redwood Forests

With unimaginable wealth and power, Cleopatra was one of the most iconic figures of the ancient world. This documentary examines the myths and mystery associated with her

Giorgio Tsoukalos examines a curious passage in ancient test The Zohar, which describes seven Earths

Giorgio Tsoukalos examines the notion that extraterrestrials could have left clues to the universe's mysteries

Alice Roberts travels to Bamburgh, Northumberland, to learn about the generations of Anglo Saxons who lived there, and visits a pioneering project in Kent

The actor is shocked by what he discovers as he dives on the wreck of a steam-age ship in north Devon, and a potential early slaver ship in Plymouth

Part two of two. An exploration of ancient Greece and the great sites of Athens, Delphi, Olympia and Epidaurus. These form some of the greatest sites in antiquity

Professor Alice Roberts explores the medieval history of Lincoln, visiting the cathedral that was once the world's tallest building

In a feature-length episode, Giorgio Tsoukalos investigates claims that Egypt was home to Earth's earliest extraterrestrial visitors