Sky History 2 Sunday

Throughout history, there have been stories of strange beings unlike anything known to exist on Earth This programme examines whether they could be more than just mythology

From octopuses that can edit their DNA to jellyfish that can live for ever, this edition considers whether such unusual creatures were delivered to Earth by aliens

Spanish Conquistadors obliterated the Mayan people's history. Here, experts investigate whether they may have erased proof of extraterrestrial visitors

Alice Roberts explores the Second World War history of Dover, visiting the base where the Dunkirk evacuation was planned and getting a taste of the Battle of Britain

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

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

A Messerschmidt 'Gigant', the biggest aircraft to fly in the Second World War. Its wreckage was discovered by Italian divers in January 2012

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored

In North Somerset, archaeologists are blown away by the discovery of an entirely new Roman town in the intended pathway of some new electricity cables

Alice Roberts heads to the south of England to see the earliest money made in Britain and a massive haul of Roman treasure that brings to life the fall of the empire in Britain

Just outside Leicester, Alice Roberts joins a team of archaeologists who are investigating a mysterious mound thought to be an Iron Age hillfort

William Shatner reveals that as a new era of exploration of Mars begins, its mysteries might be close to getting solved

Series host William Shatner is back on the hunt to find answers to the unexplainable with the help of top scientists

Part one of two. Sixty years on, Tony's close encounter has become an obsession. Pilot David presents photographic evidence of the UFO he almost crashed into

The team investigates the strange underwater anomalies in the Bermuda Triangle region of the North Atlantic Ocean and analyse evidence of similar discoveries around the world

The case of UFO chaser Captain Mantell, and what he may have seen before he was killed. Plus, experts investigate a close encounter in Texas and a mysterious crash at Shag Harbour

How the designer of one of the most popular car brands in history, Ferdinand Porsche, would not have seen his success without the support of Adolf Hitler

Legend hunter and mountaineer Adam Palmer leads a bid to finally solve the mystery of Slumach's lost gold mine, amid the rugged terrain of the Pacific Northwest

Amanda Holden and Dan Jones explore the Victorian era, one of the most sexually progressive societies in history, to learn more about the Queen's dirty secrets

An exploration of the possibility that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins

From Egypt to Easter Island, towering figures built by ancient man stand watch over Earth - but do they depict visitors from another world?

A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War

The role of ships during the Cold War, featuring a look at two submarines - former enemies - now moored in a Kent river

New evidence reveals advanced civilisations might have existed on Earth thousands of years ago - is it possible that they lived with extraterrestrials?