Sky History 2 Saturday

Experts investigate the work of Nasa and secret government files relating to extraterrestrial activity, looking for proof of alien contact in the recent or distant past

Experts explore the similarities between huge pyramids across the world, and hypothesise on whether extraterrestrials could have influenced their construction and design

Key events of the Second World War, beginning with Germany invading Poland, and touching on Japan's expansion in Asia

Assigned to the British War Crime Investigation Unit in post-war Germany, British spy boss Vera Atkins pursued her agents' fate. She eventually hunted down a Nazi mastermind

Though the Admiralty were convinced the Allies had the expertise to defeat Germany, Gilbert Roberts and the Wrens started devising wargaming tactics to combat U-boat formations

Alice Roberts heads to a farmer's field in Rutland to examine evidence of a Roman barn conversion, as well as visiting the excavation of one of Henry VIII's lost forts in Hull

In Scotland and northern England, Alice Roberts investigates an Ice Age camp, a mysterious medieval skeleton and the earliest evidence of salt making in Britain

Alice Roberts joins archaeologists on digs of northern Britain, revealing a Roman Emperor's lost bath house, and the sunken treasures of medieval pilgrims

Experts investigate the work of Nasa and secret government files relating to extraterrestrial activity, looking for proof of alien contact in the recent or distant past

Experts explore the similarities between huge pyramids across the world, and hypothesise on whether extraterrestrials could have influenced their construction and design

The crucial role ships have played in international conflict over the past 500 years, focusing on the first metal warships

The story of the Great Locomotive Chase - an attempt by northern spies to steal steam locomotive The General during the American Civil War

Remarkable feats of military engineering, focussing on the robot that defused bombs both on foreign battlefields and British streets, and an astonishing Gulf War minelayer

Elements, places, icons or events that seem to be plagued by what can only be described as a 'curse'. This episode focuses on a 'damned' amethyst gem and a devilish beast

A diamond with a sinister past, the bones of a world-famous bard, and a beach covered in 'cursed' stones

The presenter explores the world's most significant discoveries and the unexpected ways they were found. He begins by uncovering some strange structures

William Shatner goes in search of the universe's most fascinating, strange and inexplicable mysteries, starting with unusual sightings by military pilots

Experts investigate the work of Nasa and secret government files relating to extraterrestrial activity, looking for proof of alien contact in the recent or distant past

Experts explore the similarities between huge pyramids across the world, and hypothesise on whether extraterrestrials could have influenced their construction and design

Patterns in UFO and UAP sightings across the world. A strange formation is seen in the sky over the sleepy suburbs of Tinley Park, Illinois

How the failed coup on November 9, 1923 eliminated Hitler's movement. His National Socialist German Workers' Party achieved a miserable result in the 1928 Reichstag elections

Remarkable feats of military engineering, focussing on the robot that defused bombs both on foreign battlefields and British streets, and an astonishing Gulf War minelayer

Karl Ude-Martinez and Kevin Hicks explore how weapons and body armour were developed, beginning with a look at the impact of the 1645 Battle of Naseby

Drones and satellite imagery reveal a vanished Neolithic structure in an Irish field, an oasis in a Chinese desert and buried treasure in the UK

Ancient astronaut theorists hunt for evidence linking Bigfoot to alien species from the distant past, and ask whether the giant ape-like creature could be an extraterrestrial