Sky History 2 Today

Investigating whether hilltop spirits, which some through time have believed to inhabit mountains, could have been extraterrestrials

Experts investigate strange carvings from 8,000 BC and unexplained sightings in the New World, which could suggest there is more to the US's past than written in the history books

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

Karl Ude-Martinez and Kevin Hicks continue their look at how weapons and body armour were developed, with a look at the impact of the War of the Roses

Detailing how an elite group of British paratroopers managed to launch a midnight raid in order to capture Hitler's unusual radar equipment

Experts investigate why so many UFOs have been spotted near remote islands, and consider whether the remote outposts could be the earthly homes of aliens

Investigations into whether the religious relic the Ark of the Covenant could hold connections to an extraterrestrial past

Garth Barnard investigates the Turweston Wellington Collision of July 8, 1944, when two bombers collided killing 13 soldiers, before the war for them had even begun

Documentary series exploring anomalies appearing on satellite images to try and get a better understanding of unexplained phenomena

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

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

Alice Roberts visits archaeological digs in Buckinghamshire, Somerset, Dorset and Northumberland, finding out about discoveries that shed new light on British history

The actor explores the King's Cross underground station fire of November 1987, which ignited under a wooden escalator and claimed 31 lives

Military combat specialists Karl Ude-Martinez and Kevin Hicks test out swords, spears and armour as they investigate the British uprising against the Roman army

Part one of two. Documentary about mysterious glowing orbs spotted during the Second World War that ducked and dodged military flight formations at high speed

On 8 April 2011, the FBI declassified decades of top secret government documents for the first time. Here, experts examine the possibility of the end of the world

Experts examine the possibility of a secret US government facility accused of creating many diseases and biological weapons

From the Cold War to the television set, experts question whether the government is actively controlling what people think, how they act and what they believe

Experts question if there really is an elite group of powerbrokers trying to rule the planet - and if so, ascertain those behind such a new world order

Experts investigate why so many UFOs have been spotted near remote islands, and consider whether the remote outposts could be the earthly homes of aliens

Investigations into whether the religious relic the Ark of the Covenant could hold connections to an extraterrestrial past

Investigations into the possibility that sightings of alien beings or UFOs may actually be evidence of time travellers from the future

Examining the 10 most disturbing extraterrestrial encounters ever, from mass sightings in the sky to reports of alien probes found in human bodies

Investigating whether aliens could be plotting an attack on Earth, and if humans could survive their weapons' terrifying capabilities

To enter space, humans require a space suit. Are the aliens that are said to have visited Earth any different, or are they more akin to artificial drones?

In the spring of 1952, reports of UFO sightings rose significantly. Former US Air Officials attempt to shed light on the possible causes

Emperor Domitian tasks master builder Haterius with constructing a labyrinth underneath the Colosseum floor

Experts investigate why so many UFOs have been spotted near remote islands, and consider whether the remote outposts could be the earthly homes of aliens