Sky History 2 HD Sunday

A look at suggestions that extraterrestrials could be altering human DNA and repopulating the Earth with alien-human hybrids

A team of ancient alien theorists explores the nothon that ghosts and angels could actually be visitors from other-worldly realms

Experts contemplate whether Hawaii's islands may once have been inhabited by extraterrestrials and examine whether its volcanoes could provide a portal between space and time

Divers Fabien and Céline Cousteau investigate one of the most credible UFO sightings in history - a strange alien craft seen crashing into the ocean

Diver Fabien Cousteau and his fellow film-maker wife Celine investigate whether sunken ship the MS Zenobia was deliberately attacked by spies on a top-secret mission

Fabien and Céline Cousteau follow top-secret clues as they hunt for a long-lost shipwreck in the Bermuda Triangle using cutting-edge technology

After centuries of searching, Blackbeard's epic hoard remains missing. As new evidence emerges, the mystery endures as to what became of the treasure

Science reveals new insights into belief and superstition in the land of the pharaohs, from finding the long-lost 'Land of Punt' to Tutankhamun

New technology is used to decode some of Egypt's most enduring enigmas. The mysteries behind the ancient Egyptians' obsession with death and the afterlife

Helen Skelton and Alex Langlands venture to Lindisfarne and the Isle of Man to unearth the secrets of Viking burial grounds

Raksha Dave and Alex Langlands join a team from Reading University at a site in Silchester, near Reading, as they examine one of the best-preserved Roman sites in Britain

Events that are so destructive, so astounding, they must be directed by the hand of the Almighty

The actor looks at animals that strike at humans for reasons beyond normal defence and hunger, which can only be described as serial killer creatures

A walk through India's Taj Mahal, the iconic mausoleum complex commissioned in 1632 by the Mughal emperor Shah Jahan to house the remains of his beloved wife

Florida has long been a hotspot for UFO sightings. Tony Harris and the team analyse evidence of unidentified phenomena at the Bermuda Triangle and around the world

A new and shocking theory could explain one of America's most famous unsolved crimes - the disappearance of aviator Charles Lindbergh's 20-month-old son

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

Reports of a jar of gold send Adam and Kru on the trail of missing prospector Volcanic Brown and his last known location

The actor examines the story of Atlantis, which according to the Greek philosopher Plato, was once home to an advanced civilization before it was destroyed in a cataclysm

Chile has the highest number of UFO sightings of anywhere on Earth. Here, incredible footage of a strange craft has people asking again about the reasons why

The number 12 holds divine significance in numerous sacred traditions and is found repeatedly in ancient architecture. This programme reveals why

During the Cold War, Project Blue Book came into being, aiming to gather and analyse UFO observations. To this day, many cases raise questions

An exploration of the facts behind the organisation known as the MJ-12 - an alleged secret committee of elite experts. Are there links to Roswell?

In the Mojave Desert, there is a structure apparently built to bestow everlasting life. According to the architect, its blueprint is from another world