Sky History 2 HD Sunday

Rumours are rife that aliens inhabit the continent of Antarctica. This episode explores the icy wilderness to find out

Satellite images have revealed a giant face that appears to be carved into the Earth in Alberta, Canada, which has now become known as 'The Badlands Guardian'

Physicist Bob Lazar, who says he was hired to reverse-engineer an alien spacecraft by the US government, with a fuel source that had the power to change the world

Alice Roberts explores the UK's past through the stories of its towns, beginning with Chester, examining its Roman heritage by delving into the town's history

Alice Roberts tells the story of Viking England by studying the history of York, taking part in a Viking battle and meeting the people behind a memorable archaeological find

America's Constitution starts with the words 'We the People'. The presenter comtemplates who, exactly, is meant to be included in this soaring phrase

The former US President explores the history of the Presidency. This final episode traces the rise of America's place on the world stage

The story of Cleopatra Selene, the little-known daughter of Cleopatra and Antony, who witnessed her dynasty collapse but survived to become a great queen

Ross is joined by maritime archaeologist Mallory Haas in Plymouth to deep dive on the wreck site of 36-gun Nelsonian frigate HMS Amethyst, launched in 1799

Alice Roberts visits a secret location in the Cotswolds, which appears to be a high-status Anglo Saxon cemetery, where she finds a very precious and fragile artefact

The team follows the search for artefacts from the Second World War, joining marine archaeologists in the Solent as they raise a Fairey Barracuda divebomber

The actor continues his quest to find answers to the unexplainable, this week turning his attention to the apocalypse

Sacred waters with remarkable healing powers, ancient mystics who lived for hundreds of years and a scientific breakthrough that may provide the answers to eternal life

How UFO sightings has been analysed and discussed at the highest levels of government in the UK, the United States and the former Soviet Union

Tony Harris travels to the Florida coast to explore the notorious and fear-provoking Bermuda Triangle, to investigate mysterious ruins found there

Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles

Hans Kammler's fingerprints can be found all over the Third Reich's most prestigious and deadly engineering projects, including rockets and concentration camps

The myriad of rumours, theories and disputed historical accounts of Adolf Hitler's sexual psychology, exploring the impact of his alleged and proven sex life on his behaviour

Amanda Holden and Dan Jones explore sexual behaviours during the Georgian era. Amanda learns the customs of a true society girl, while Dan makes his own animal intestine condom

How, over the past 20 years, thousands of potentially habitable exoplanets have been found. It has been suggested they may be home to intelligent extraterrestrial life

Giorgio Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol

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

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

A weather balloon said to have outside Roswell in 1947, which may have actually been alien in nature