Sky History2

Experts explore the controversy surrounding the ancient Crystal Skulls, asking what powers might be unleashed if all 13 artefacts were brought together.

Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci. Could they hide evidence of extra-terrestrial beings.

Could alien technology have helped the Nazis' rise to power? Experts question whether Hitler had extraterrestrial help in his quest for world domination.

Uncover the shocking truth about alien remains as experts investigate unsettling reports of extraterrestrial bodies recovered from crashed UFOs.

West Country: Tony arrives at the most rebellious corner of England as he looks back at the Duke of Monmouth's attempt to overthrow the British monarchy.

An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals.

Experts investigate if a mysterious caller had inside knowledge about the assassination of President John F Kennedy.

Investigate extraordinary events that defy scientific explanation. World's most unexplained delves into spontaneous human combustion. Should you be afraid.

While Avery struggles to save his business, old secrets and conflicts with Connor disrupts Mike as he tries to end the year on a high note.

What is the Voynich Manuscript, and what secrets does the mysterious 500-year-old document hold.

Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord.

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases.

Discover a trail of moving objects in the ice of Antarctica, evidence of one of Joseph Stalin's most insane schemes and a code in the Sonoran Desert.

Along with Treblinka and Majdanek, Sobibor was one of the camps used in Operation Reinhard, in which the Nazis murdered almost two million people.

Rise of the Machines: Examining moments of engineering ingenuity which made the difference between triumph and disaster on the battlefield - beginning with World War I.

Experts investigate the power of the number three in history, science and astronomy. Could its huge significance bear links to extraterrestrial life.

Scientists explore the possibility that sightings of alien beings or UFOs may be evidence of time travellers from the future.

Journey to the world's hottest UFO zones, where physical and paranormal phenomenons and unidentified objects and aliens are reported with alarming frequency.

Evidence suggests the world's governments could be on the verge of announcing everything they know about UFOs. What will this mean for our society.

Ex-Rolls Royce engineer Bradley Walsh questions the Pyramids' builders and purpose, seeking answers by visiting them himself.

Humans are found to have lived in Britain earlier than thought when tools are unearthed in Norfolk, while some of our ancestors' customs are revealed at another dig.

What is the Voynich Manuscript, and what secrets does the mysterious 500-year-old document hold.

Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord.

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases.

Discover a trail of moving objects in the ice of Antarctica, evidence of one of Joseph Stalin's most insane schemes and a code in the Sonoran Desert.

Along with Treblinka and Majdanek, Sobibor was one of the camps used in Operation Reinhard, in which the Nazis murdered almost two million people.

Rise of the Machines: Examining moments of engineering ingenuity which made the difference between triumph and disaster on the battlefield - beginning with World War I.

A 1700-year-old death mask from Siberia reveals ancient cranial surgery, shedding light on advanced medical practices of the Tashtyk culture.

With the civil war raging on, there's a new challenge ahead for Rome: the rise of the new religion of Christianity. The Empire is invaded by the Goths.

Experts investigate the power of the number three in history, science and astronomy. Could its huge significance bear links to extraterrestrial life.