Sky History 2 HD Saturday

How dozens of megalithic sites across the globe were designed to emanate the exact same frequency allowing humans to connect with extraterrestrial forces

The Eisenhower Briefing Document, advising President-elect Dwight Eisenhower about top-secret scientists and government officials tasked with investigating reports of UFOs

Researchers ask if cloud computing represents the rediscovery of an ancient repository of knowledge known as the Akashic Record

A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War

The story of the submarine and their role in naval warfare, from early beginnings in the American War of Independence to the modern day

Part one of two. Documentary exploring the rivalry between the leaders of Britain and Germany during the Second World War, and their common experiences during the First World War

Part two of two. Documentary exploring the rivalry between the leaders of Britain and Germany during the Second World War, and their common experiences during the First World War

A computer generated re-creation of the events of 1944, in which the US Carrier Task Force forged a path through the Pacific to assault enemy bases at Kwajalein and Truk Lagoon

Experts reconstruct the struggle faced by American forces, led by the USS Enterprise, to reclaim the Marianas Islands from enemy forces

A look at the creation of the super marine Spitfire, an amazing feat of engineering that became one of the most famous fighter aircrafts in the Battle of Britain

The story of the changing face of tank warfare over the past 100 years from the first tanks produced in late 1914 to break the deadlock of Trench warfare on the Western Front

Professional salvage diver Tony Sampson and his team dive in search of SS Clare Lilley, which rests off Portuguese Cove, Nova Scotia

Part two of two. Adolf Hitler's penchant for barbarism and destruction, starting with his surprise Russian invasion and the anarchy that followed

The stories behind unusual and unexplained UFO sightings, starting with an incident played out in 1952 across the skies above Washington National Airport

Perplexing and unusual historical objects, investigating whether a machine can read personalities. Plus, an ancient golden mask painted with human blood and a cursed chicken pot

An elite crew works to salvage America's biggest shipwreck before hurricane season hits. Plus, a huge, mysterious object is raised from the depths of the ocean

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

The truth behind the rumours of Hitler's sex life, including whispers of homosexuality, voyeurism and sadomasochism, and the impact upon his overall behaviour

How dozens of megalithic sites across the globe were designed to emanate the exact same frequency allowing humans to connect with extraterrestrial forces

The Eisenhower Briefing Document, advising President-elect Dwight Eisenhower about top-secret scientists and government officials tasked with investigating reports of UFOs

Researchers ask if cloud computing represents the rediscovery of an ancient repository of knowledge known as the Akashic Record

How, when a century-old extradition treaty between Britain and Spain ended in 1978, the Spanish coast became a safe haven for the mafia and criminal masterminds

An investigation into the secrets of ancient civilisations and their approach to death. This episode features a mysterious well filled with bones

Archaeologists investigate the discovery of a mass grave in Dorset, and try to determine if the bodies are the remains of Vikings

Giorgio Tsoukalos studies India's Sanskrit texts, which are filled with descriptions of brain surgery, flying crafts, nuclear physics, and other advanced sciences