Sky History2

From a secret underground military facility in Greenland to a grisly collection of human remains in the Andes, explore more secrets in the ice.

With all the activity that's been recorded here, Sedona seemingly doubles as an intergalactic airport - but what is drawing UFOs to this spot.

In 2017, astronomers observed the very first visitor from interstellar space, 'Oumuamua'. Craig and Sarah speak with SETI scientists regarding its origin.

Tasmania, New Zealand and the Bass Strait: Investigating the disappearance of pilot Frederick Valentich, whose last transmission gives an account of what he experienced.

Experts unseal the truth about the potential aliens living and working among us. Who has come in peace? And who has a more sinister motive in mind.

Experts investigate the mystery of the Solway Firth Spaceman - a spacesuit-clad figure who strangely appeared in a photograph taken in Cumbria.

When satellites spot anomalies in the unexplored Amazonian jungle, experts wonder if they've discovered relics of a lost civilisation.

The Pyramids of Giza could be a map of the stars. First responders bring hope during Hurricane Katrina. An Indonesian volcano erupts in a shade of blue.

Visit a UFO house in Taiwan and travel to Laos, where settlers use war ammunition as everyday objects. Plus, get to know a family that calls a graveyard home.

The Hobbit, Limb Generation, Mind Over Matter: A look at the future of mind control, a extinct hobbit race and whether humans can regenerate our limbs.

What happens when people take their numerophobia too seriously? Experts investigate why certain numbers incite fear and panic in people.

Believers and skeptics debate the origins and meanings of the mysterious formations known as crop circles.

If extraterrestrials visited Earth would they enlighten us or destroy us? Experts examine the possibility of a doomsday orchestrated by an alien enemy.

A fascinating and shocking countdown of the top ten military encounters between Earth's armed forces and UFOs.

A look at some of the most widely witnessed UFO events ever, including large black triangular objects in the night sky regularly spotted in the 80s and 90s. (3 of.

Rob and Shelley Hartland believe they live under a "UFO super highway". Meanwhile, Peter Khoury claims he experienced a close encounter - of the sexual kind.

In 1968, airmen in North Dakota spot a huge UFO over one of the US' most high security Air Force bases. Papua New Guinea village locals report strange objects in the sky in 1959.

In 1966, a class of Melbourne students spot a UFO and are told never to speak of the incident. A man's car dies in 2009 after he spots a cigar-shaped object in the New York sky.

Andy tracks down the site of the original Stonehenge, meets a childhood witness of Wales' most famous UFO incident and takes part in a comedic hunt for the Welsh Wildman.

Dan Jones explores the 900-year history of the beautiful Leeds Castle in Kent, from its origins as a royal Saxon family's manor to a 20th-century retreat for the rich. (4 of.

New satellite evidence reveals a mysterious spiral structure from space and experts speculate that it could be the lost city of Atlantis.

The Pyramids of Giza could be a map of the stars. First responders bring hope during Hurricane Katrina. An Indonesian volcano erupts in a shade of blue.

Visit a UFO house in Taiwan and travel to Laos, where settlers use war ammunition as everyday objects. Plus, get to know a family that calls a graveyard home.

The Hobbit, Limb Generation, Mind Over Matter: A look at the future of mind control, a extinct hobbit race and whether humans can regenerate our limbs.

A strange creature was reportedly seen in a wooded area of Massachusetts by different people, all giving similar descriptions. Coincidence, collusion, or a genuine mystery.

A hoard of golden coins was found in the prospecting district of California. Where did they come from and why did the owners never claim them.

New satellite evidence reveals a mysterious spiral structure from space and experts speculate that it could be the lost city of Atlantis.

The King's Mask, the Nazi Plate and the Stonehenge Drums: Exploring the origin of a death mask, three carvings which could shed light on Stonehenge and a plate found in Austria.

The Psychograph, the Blood Mask and the Cursed Chicken Pot: Investigate a machine which can supposedly read personalities, a mask painted with human blood and a cursed pot.