Sky History 2 Friday

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

Meteor impacts have created the perfect environment for humankind. This film ponders whether new evidence reveals that celestial objects have been sent by an alien intelligence

Professor Alice Roberts visits Portsmouth to investigate the history of the Royal Navy, uncovering some uncomfortable truths behind the myth surrounding Lord Horatio Nelson

The unexplained loss of 117 English men, women and children who came ashore on Roanoke Island in 1587 to establish a permanent English settlement in the New World

A look at the creation of the super marine Spitfire, an amazing feat of engineering that became one of the most famous fighter aircrafts in the Battle of Britain

Experts investigate whether common human rituals may have been inspired by contact with aliens

Investigations into the possibility that extraterrestrials with a superior knowledge of science and engineering landed on Earth thousands of years ago

How speed has become a decisive feature in war's evolution - from the chariot that brought greater mobility to small handguns like Samuel Colt's revolver

A look at the Battle of Kursk from the Russian perspective. More than two million men fought in the biggest tank battle of the conflict, which unhinged the German war machine

The search for an alleged UFO thought to have crashed in Aurora, Texas in 1897. Investigators arrive at the scene to dig for evidence of the claim

Historians analyse an intriguing scrap of papyrus that may prove Jesus was married, intent on determining whether or not it is genuine

Mikey Kay and Garth Baldwin investigate the Knights Templar's underground movements to discover whether they took the Holy Grail with them

The actor looks at animals that strike at humans for reasons beyond normal defence and hunger, which can only be described as serial killer creatures

The history of HMS Invincible, a ship that was captured from the French in 1747 and helped transform the Royal Navy with the lessons it taught about organisation and ship design

The hunt for hidden treasures and why the prospect of their recovery fires the human imagination. However, there is a chance such riches may not exist

The presenter explores how coveted religious artifact the Ark of the Covenant could just disappear and whether it is possible that it could ever be found

Homicide detective Rod Demery and scientist Professor Turi King study an 800-year-old partial skeleton in a bid to identify how it died and the possible identity of its killer

An outlandish murder plot to kill Irish down-and-out Michael Malloy in order to claim on his life insurance. Each attempt failed as the mark's luck endured

Experts investigate whether common human rituals may have been inspired by contact with aliens

Investigations into the possibility that extraterrestrials with a superior knowledge of science and engineering landed on Earth thousands of years ago

The history of HMS Invincible, a ship that was captured from the French in 1747 and helped transform the Royal Navy with the lessons it taught about organisation and ship design

Weapons designed for everyone hand a sizeable advantage. Experts explore three weapons that are easily used: the crossbow, a pike and the Kalashnikov

Sacred waters with remarkable healing powers, ancient mystics who lived for hundreds of years and a scientific breakthrough that may provide the answers to eternal life

A look into lingering rumors that advanced military aircraft, such as the SR-71 Blackbird and B-2 Spirit Bomber, were designed from reverse engineered alien technology