Sky History 2 Wednesday

Experts investigate mysterious beings with big heads and eyes, whose images were found carved into rocks. Known as the 'greys', they are rumoured to be alien life forms

Ancient alien theorists explore the origins of mythical gods, and examine whether the tales of superhuman beings could be based on sightings of extraterrestrials

Documentary series exploring the role of trains in the major conflicts of the past 150 years. This instalment considers the Second World War of 1939 to 1944

Treblinka, Majdanek and Sobibor, the camps used in Operation Reinhardt, a murder campaign in which the Nazis murdered almost two million people over two months in 1942 and 1943

Documentary exploring anomalies appearing on satellite images. A Second World War aerial photograph triggers a hunt for the lost city of Gath - the home town of the giant Goliath

Experts investigate mysterious beings with big heads and eyes, whose images were found carved into rocks. Known as the 'greys', they are rumoured to be alien life forms

Ancient alien theorists explore the origins of mythical gods, and examine whether the tales of superhuman beings could be based on sightings of extraterrestrials

Alice Roberts explores the Georgian era in Bristol, taking a horse-drawn carriage ride, sampling backstreet gin, and discovering the story of the world's first chocolate factory

Dan Jones explores the history of the Welsh capital's landmark, Cardiff Castle, and discovers more about its various incarnations over the centuries

Treblinka, Majdanek and Sobibor, the camps used in Operation Reinhardt, a murder campaign in which the Nazis murdered almost two million people over two months in 1942 and 1943

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

A man believes he recorded Bigfoot on video while foraging for mushrooms. Plus, how rock paintings discovered in India might be proof of an ancient visitation

The team looks into a new sighting of Sasquatch in the trees of California. Plus, mysterious streaks witnessed in the night sky in Australia

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth - from hidden worlds to unexplainable natural phenomena

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

The stories of some of history's most notable leaders, from Sir Winston Churchill to Fidel Castro and Nelson Mandela

Judi Love, Geoff Norcott and Charlie Higson join the host to discuss the man once voted the Greatest Briton - Winston Churchill

How the race to develop the first atomic bomb was seen as critical to secure world dominance

Himmler's desire to unearth the true origins of humanity led to an attempt to prove the Paleolithic past of Germany's Aryan race

Experts investigate mysterious beings with big heads and eyes, whose images were found carved into rocks. Known as the 'greys', they are rumoured to be alien life forms

Ancient alien theorists explore the origins of mythical gods, and examine whether the tales of superhuman beings could be based on sightings of extraterrestrials

Alice Roberts explores the history of Oxford during the Civil War, when the city became a power base for the royalist forces and a rival capital for nine years of conflict

Tony Robinson embarks on a five-day expedition along Dorset's Jurassic coast to explore the county's role in protecting Britain from invasion during the Second World War

The actor recounts how after being struck by lightning, a man recovered to find he had musical skills that he did not possess before

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