Sky History 2 Sunday

Ten of history's most compelling - and somewhat covert - projects that have studied the UFO phenomenon

The top 10 UFO crashes, from an acorn-shaped object found in the woods of rural Pennsylvania, to a mysterious craft that washed ashore in Japan

A CGI reconstruction of the Second World War battle of Santa Cruz, in which the USS Hornet was sunk and her sister ship the USS Enterprise suffered heavy casualties among the crew

The Japanese attack on the USS Enterprise, which came at a point in the Second World War when the vessel was the only battle-ready American carrier left in the Pacific

The story of the USS Enterprise and the role the ship played in the Gilbert Islands invasion during the Second World War, becoming the first to receive a Presidential Unit Citation

Archaeological finds across the North of Britain, including clues to Scotland's first kingdoms and a hoard of Viking treasure unearthed by metal detectorists

Alice Roberts visits archaeological digs around the UK, starting with the west of Britain, where finds include lost First World War training trenches

Alice Roberts visits archaeological digs in the north of Britain, where finds include Scottish man-made islands that help paint a picture of Stone Age tech

Craig and Sarah Cruddas examine the Chicago International Airport O'Hare case of November 2006 - a mass sighting of a flying saucer hovering over a United Airlines airport gate

Craig Charles and co-host Sarah Cruddas investigate a UFO spotted at Stephenville, Texas, in January 2008, apparently travelling at supersonic speed

Reconstructing the 1944 battle of Leyte Gulf using CGI animation to re-create one of the Second World War's largest sea battles between America and Japan

The events of 1944, when the USS Enterprise led the Carrier Task Force in a charge through the Pacific, hammering the enemy bases at Kwajalein and Truk Lagoon

Alice Roberts visits archaeological digs in the east of the country, where finds include Britain's biggest Roman letter hoard, sunken treasure and Caesar's Fort

Ten of history's most compelling - and somewhat covert - projects that have studied the UFO phenomenon

The top 10 UFO crashes, from an acorn-shaped object found in the woods of rural Pennsylvania, to a mysterious craft that washed ashore in Japan

The Battle of Thermopylae, fought in 480 BC between the Achaemenid Persian Empire under Xerxes I and an alliance of Greek city-states led by Sparta under Leonidas I

The Battle of Teutoburg Forest. Rome's defeat not only stopped the growth of its empire, but also created the Latin-Germanic divide that persists in Western Europe to this day

The unexpected things revealed by catastrophic disasters - both natural and human made - can reveal in their wake

Evidence that ties a meteor strike to a Biblical tale. Plus, the treasure-filled tunnel revealed by a sinkhole in Mexico

Alice Roberts visits archaeological digs in the east of the country, where finds include Britain's biggest Roman letter hoard, sunken treasure and Caesar's Fort

Alice Roberts joins archaeologists in the North as they uncover Roman writing tablets, a lost monastery and a rare Bronze Age weapons hoard

A CGI reconstruction of the Second World War battle of Santa Cruz, in which the USS Hornet was sunk and her sister ship the USS Enterprise suffered heavy casualties among the crew

The Japanese attack on the USS Enterprise, which came at a point in the Second World War when the vessel was the only battle-ready American carrier left in the Pacific

The story of the USS Enterprise and the role the ship played in the Gilbert Islands invasion during the Second World War, becoming the first to receive a Presidential Unit Citation

A high-rise window cleaner somehow survives a 50-storey fall, basketball-sized ice chunks fall from the sky and dismembered human feet wash up on Vancouver's beaches