Sky History 2 HD Tomorrow

Startling evidence suggesting that the Ancient Maya conspired with aliens, as experts hypothesise that they acquired extraterrestrial knowledge of astrology

Experts scrutinise prehistoric ruins, asking whether humans could have built such advanced structures alone, and examine the possibility of alien intervention

Exploring how Lawrence of Arabia used guerilla warfare against the Ottoman Empire's railways and what lies beneath New York's Grand Central Station

The invasion of Poland by the German army in 1939, examining how Hitler succeeded in pushing through his rearmament and war plans relatively unhindered

A satellite captures an eerie image of a perfectly round island rotating within a perfectly round lake in the middle of a supposedly haunted Argentinian swamp

Startling evidence suggesting that the Ancient Maya conspired with aliens, as experts hypothesise that they acquired extraterrestrial knowledge of astrology

Experts scrutinise prehistoric ruins, asking whether humans could have built such advanced structures alone, and examine the possibility of alien intervention

Alice Roberts reveals the history of Belfast, visiting the shipyards that built the Titanic and getting locked up in the notorious Crumlin Road gaol

Dan Jones explores the history of Carrickfergus Castle in Co Antrim, a stronghold key to understanding the relationship between Britain and Ireland

The invasion of Poland by the German army in 1939, examining how Hitler succeeded in pushing through his rearmament and war plans relatively unhindered

A chronological appraisal of the dramatic D-Day story, focusing on the vessels that made the landings on the beaches of Normandy possible

The possible truth behind a pattern of UFO sightings near volcanos. Plus, the origin of the strange stone spheres of Costa Rica

The sighting of a UFO from the window seat of a passenger jet, a strange underwater discovery said to be a lost Japanese city and an odd series of tunnels in Brazil

Satellites orbiting the Earth detect a weird pattern in the Arctic ice that has strange parallels to mystery markings found on Mars

The actor is joined by astrophysicist Sarah Cruddas to scrutinise an 2016 event in the village of Pentyrch, south Wales involving a vast triangular UFO and the RAF

The impact of Danish battle axes, Saxon shields and Norman lances on the Battle of Hastings in 1066

An attempt to discover hidden meanings behind Leonardo da Vinci's paintings, to see if the artist was also a prophet, as well as one of history's great philosophers and engineers

Part one of two. Two explorers get a shock when they go to get a closer look at enormous human-like footprints discovered in Northern California, making headlines around the globe

The crime documentary continues, shedding light on rumours that Princess Anastasia, daughter of Tsar Nicholas II, managed to escape death at the hands of the Bolsheviks in 1918

Startling evidence suggesting that the Ancient Maya conspired with aliens, as experts hypothesise that they acquired extraterrestrial knowledge of astrology

Experts scrutinise prehistoric ruins, asking whether humans could have built such advanced structures alone, and examine the possibility of alien intervention

Alice Roberts explores the Georgian era in Bristol, taking a horse-drawn carriage ride, sampling backstreet gin, and discovering the story of the world's first chocolate factory

Dan Jones explores the turbulent history of Lancaster Castle, which has witnessed scenes of historical, cultural and political significance throughout the centuries

Three stories about blood-curdling curses, including a string of deadly house fires in Britain that are linked to a supernatural arsonist and a mysterious painting of a crying boy

Space journalist Sarah Cruddas joins Craig to investigate a spectacular mass UFO sighting over the city of Phoenix, Arizona, in 1997