Sky History 2 HD Wednesday

From Egypt to Easter Island, towering figures built by ancient man stand watch over Earth - but do they depict visitors from another world?

Experts investigate ancient man's apparent obsession with building pyramids, and consider whether extraterrestrials may have helped with their construction

Investigating evidence that suggests the US military has been under attack from aliens for the past 50 years, asking if a huge secret could be being kept out of the public eye

Investigating the possibility of time travel, with experts discussing new evidence suggesting that this phenomenon of science fiction might not be as far-fetched as it seems

The history of the presidents who made an impact through imagining 'what we could be, not just what we are'

The Second World War in Italy, featuring expert analysis, first-person accounts and archive footage from the Second World War

How Scotland is an epicentre of otherworldly phenomena, home to mysterious ancient stone circles, stories of strange beings and is a major hotspot for UFO sightings

Theorists speculate about whether mysterious metal artifacts could provide physical evidence of extraterrestrials visiting Earth in the distant past

Garth Barnard examines the event that ended the life of Prince George the Duke of Kent in 1942, questioning whether his death was an accident

Garth Barnard investigates the Turweston Wellington Collision of July 8, 1944, when two bombers collided killing 13 soldiers, before the war for them had even begun

Craig and space journalist Sarah Cruddas consider incidents over the US that it has been suggested are being covered up by the Pentagon

The host explores how some US presidents have exerted power over the economy through various measures, including taxation, imports and exports and law-making

The origins of the curses surrounding Sutton Hoo, Lyuba and others, from an Anglo-Saxon Burial ground to the caves of the Judean Desert and Siberia in the Ice Age

The actor visits Brushy Mountain State Prison in Tennessee, to hear of a jailbreak enacted by James Earl Ray, assassin of Martin Luther King Jr

In Northern Ireland, the graveyard of a Victorian workhouse sheds light on one of the most traumatic periods of modern Irish history, the Great Famine of 1845

Alice Roberts explores the Norman period of British history in Winchester. She attempts to storm a castle wearing chain mail and investigates the origins of modern surgery

The story behind the breath-taking temple complex Angkor Wat, which is located in Cambodia and is the largest religious monument in the world

The mysterious death of the Duke of Kent in a 1942 plane crash, which has led to accusations of the Royal family erasing him from history

Dr Fern Riddell and Dr Karen Bellinger examine the mysterious, isolated Easter Island, in the southeastern Pacific Ocean

How Scotland is an epicentre of otherworldly phenomena, home to mysterious ancient stone circles, stories of strange beings and is a major hotspot for UFO sightings

Theorists speculate about whether mysterious metal artifacts could provide physical evidence of extraterrestrials visiting Earth in the distant past

In Northern Ireland, the graveyard of a Victorian workhouse sheds light on one of the most traumatic periods of modern Irish history, the Great Famine of 1845

The crucial role ships have played in international conflict over the past 500 years, beginning with the battleship's declining influence during the 20th century

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

Craig and space journalist Sarah Cruddas turn their attention to reports of alien abductions, focusing on a case from the UK which was reported in in November 1980