Sky History 2 Saturday

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 investigate remote ruins, mysterious caves and legendary mountain portals, asking if these alleged stargates have brought ancient aliens to Earth

Experts examine the belief that gifted children with strange abilities and great knowledge may have been born from ancient aliens

Kevin Hicks and Karl Ude-Martinez test a cannon, grenade and Brown Bess musket as they explore what it was like to face a Napoleonic charge

How new weapons with immense force define the wars of the 20th century. International experts test the catastrophic effects of destructive weaponry

A look at the mysteries of the most legendary battles from ancient times. This episode reveals how a Parisian army repelled the Vikings

Giorgio Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol

Giorgio Tsoukalos examines the notion that extraterrestrials could have left clues to the universe's mysteries

Recounting how on the outskirts of Bouerat Harbor in Libya, a small group of British special forces made plans to destroy a crucial German fuel depot

Alice Roberts sets off across Hadrian's Wall to reveal the forgotten story of the Roman Army's secret weapon in Britain - their cavalry

Alice Roberts investigates the best archaeological discoveries of 2018 from the West of the UK, including the biggest maritime excavation since the Mary Rose

The haunting history of the town that time forgot, unexplained circles in the New Mexico desert and a possible clue to extra-terrestrial life in the Arctic

Documentary exploring alien-like metal monsters coming from the sea, a war between 30 million crabs and an army of killer ants

Documentary charting the life story of Winston Churchill and his rise to greatness, beginning by exploring his early beginnings and initial career

An incident in which a Boeing 777 crash-landed into the San Francisco Airport. Engineers revisited other disasters to unveil the complex relationship between humans and machines

Rick and Marty Lagina help treasure-hunters Donna McCauley and Gypsy Jewels search a spot in Mineral Springs, Texas, where stolen gold is believed to have been hidden

Professor Alice Roberts delves into the life and death of Anne, Queen of England from 1702 to 1714, who shockingly endured 17 failed pregnancies

Documentary exploring the roots of Adolf Hitler and tracing the story of his life from the town of his birth to his final days

An examination of the role of Heinrich Himmler, who largely due to the SS division that the he led, was the most powerful of all of Hitler's men

A look at the accounts of modern-day alien abductees. Plus, the possibility that bizarre Paracas skulls discovered by Julio Tello could be of extraterrestrial origin

Theorists explore world mythology as they investigate whether extraterrestrials could be responsible for mankind's existence

Bil Lepp investigates the rivalries of Alexander Hamilton and Aaron Burr, the Hatfields and McCoys, and the OK Corral

Bil Lepp separates fact from fiction surrounding the Bowie knife, attempts to outshoot Abraham Lincoln and unloads the Colt 45 origin story

Experts question whether the facts of Earth's alien past could be buried in areas that - thanks to warfare or instability - are presently off-limits to exploration