Sky History 2 HD Thursday

Experts investigate the similarities in burial tombs from distant cultures, and question whether aliens could have influenced their complicated designs

Experts investigate mysterious relics that have been revered by cultures for millennia, considering if these sacred items truly hold divine or otherworldly power

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

A tour along England's south coast, diving with sharks, exploring the battlements of Drake's Island, uncovering the origins of Scouts and discovering fossils on the Isle of Wight

The two guys try to authenticate props from the film Titanic, Ton faces off with a rattlesnake at a snakebite kit sale and Allen gets into ice carving with chainsaws

Allen and Ton uncover glass blowing tools, autographed baseballs and a hockey puck launcher when sorting through a unit they did not want

Military historian Stephen Bull tests the three most significant weapons of the sea and explores whether the subsonic torpedo could rule the waves in the future