Sky History Today

Theorists speculate about whether mysterious metal artifacts could provide physical evidence of extraterrestrials visiting Earth in the distant past

Quaint mansion RAF Rudloe Manor in Wiltshire, a suspected epicentre of British research into UFOs since the Second World War

The theory that extraterrestrials have visited Earth for millions of years, exploring the notion that their intervention has played a role in human evolution

Darrell gives and takes when the buyers descend upon Arcadia in California. Ivy's prospects soar, while Rene and Casey uncover a his-and-hers locker.

Mary learns that not even the 'cupped hands' of San Bernardino can save her fortune, Ivy manages to scrape together a bit of coin, while Kenny finds all the magic

Emily receives a newlywed-themed surprise from the girls, Rene reels in a big locker, and Darrell tests his bicycle knowledge, and wins

New buyers make their debut at the oldest facility in Los Angeles, Brandi and Jarrod try to piece their way to a win, and Ivy attempts to hoard most of the units for himself

Andy McGrath sets out on a captivating journey into British Ufology, uncovering notorious cases as he explores the Welsh Triangle and revisits UFO landing sites

Part two of two. Adam, Gwen and Julie recall personal encounters with UFOs, before it is revealed that each individual has time missing from their plotted recollections

A seller shuffles into the shop with a football signed by Da Bears, while Chum strikes a jumpman pose as he checks out a Michael Jordan statue

Rick checks out a rare 1589 manual for war practices and fortifying defences after it is brought into his store

Kenny discovers motorcycle challenges at an El Monte auction caravan, while Rene and Casey find success with their box-filled storage unit

The buyers return to Moreno Valley. Rene takes a unique approach by inviting his daughter to join him for a special 'Bring your Daughter to Work' day

The series telling the stories behind remarkable satellite images continues, focusing on strange barren rings in the Namib Desert and a lost city in the heart of the Amazon

Part one of two. The Trojan War, a conflict between the ancient Greeks and the city of Troy. Plus, efforts to pinpoint the legendary city's location

The actor examines bone-crushing football and deadly baseball games from an age when a lack of rules made extreme sports truly dangerous

US YouTube sensation Beau Ouimette and presenter Rick Edwards search the UK's waterways in search of archaeological finds, beginning in Stirling

Beau Ouimette and Rick Edwards visit River Avon beneath Warwick Castle, discovering an array of artefacts ranging from the time of the Wars of the Roses to the Victorian age

Beau Ouimette and Rick Edwards visit the River Trent near Newark Castle, site of one of the greatest strongholds of the English Civil War

Mike heads to the Californian home of a sculptor, entrepreneur and horror icon, whose unique collection includes monsters, gargoyles and a custom rocket ship on the front lawn

Top champions from previous seasons return to the forge to compete against one of the expert judges in a high-stakes bladesmithing challenge

Archaeologists examine new evidence uncovered in Turkey that may reveal more about the notorious tale of the Trojans

Part one of two. The Trojan War, a conflict between the ancient Greeks and the city of Troy. Plus, efforts to pinpoint the legendary city's location

The actor examines bone-crushing football and deadly baseball games from an age when a lack of rules made extreme sports truly dangerous

Stories of encounters with paranormal entities, as told by the people who witnessed the events