Sky History 2 HD Friday

An intriguing artefact in a museum in Southwark, south London. This strange brown felt object stands about eight inches high and is covered in 88 human teeth

A look at perplexing and unusual objects. This episode focuses on a lost language, a beauty machine and something called the Disk of Strangeness

How the pyramids of Giza could be a giant map of the stars. Plus, how first responders brought hope to the survivors of Hurricane Katrina

Part one of two. How the Channel Island of Alderney became a pre-occupation of Nazi leader Adolf Hitler and was transformed into one of the most heavily fortified places on Earth

Part two of two. On the orders of Hitler, more than 5,000 slave labourers were shipped to Alderney to build a series of fortifications designed to protect the island from attack

Experts investigate whether alien life forms are thriving in Earth's seas, following Russian cosmonauts' discovery of living plankton in space

An investigation into crop circles, considering whether they are a hoax or evidence of alien interaction

Experts open previously off-limits secret files in a bid to answer some of the most mysterious questions surrounding UFOs and extraterrestrial life

Two-part documentary exploring the Anglo-Norman invasion of Ireland, beginning in the turmoil of 12th-century Ireland, where provincial kings compete for supremacy

Part two of two. In 1171, Henry II arrived to take control of Ireland, and granted land there to settlers from Britain. Cutting-edge science reveals their fascinating lives

An intriguing artefact in a museum in Southwark, south London. This strange brown felt object stands about eight inches high and is covered in 88 human teeth

A look at perplexing and unusual objects. This episode focuses on a lost language, a beauty machine and something called the Disk of Strangeness

How the pyramids of Giza could be a giant map of the stars. Plus, how first responders brought hope to the survivors of Hurricane Katrina

Part one of two. How the Channel Island of Alderney became a pre-occupation of Nazi leader Adolf Hitler and was transformed into one of the most heavily fortified places on Earth

Part two of two. On the orders of Hitler, more than 5,000 slave labourers were shipped to Alderney to build a series of fortifications designed to protect the island from attack

A version of the ancient text once buried with an Egyptian scribe, now preserved in the British Museum and thought to be the oldest surviving document in human history

Experts investigate whether alien life forms are thriving in Earth's seas, following Russian cosmonauts' discovery of living plankton in space

An investigation into crop circles, considering whether they are a hoax or evidence of alien interaction

Experts open previously off-limits secret files in a bid to answer some of the most mysterious questions surrounding UFOs and extraterrestrial life

Dan Jones explores the history of Stirling Castle, which has long been one of the most strategically important castles in Britain and guards the gateway to the Highlands

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

Andy McGrath joins a team of Nessie experts and volunteers to carry out the biggest search for the Loch Ness Monster in 50 years

Mike Hall, owner of Rust Bros Restorations, helps to restore a 1971 Super Bee, struggles to sell some cars, and hunts for a new place to live

Experts investigate whether alien life forms are thriving in Earth's seas, following Russian cosmonauts' discovery of living plankton in space