Sky History Thursday

Mike is 'junk drunk' on a return visit to a Florida collector. Meanwhile, in California, Robbie and Jersey uncover a folk art masterpiece

Chum beams at a light bulb trick from Las Vegas' own Mr Electric, while Rick kneels to a stool from Queen Elizabeth II's coronation

Among the magnificent items studied are an obsidian mirror and the Voynich Manuscript, an illustrated codex hand-written in an unknown, possibly meaningless writing system

A tiny metal cube with a connection to Adolf Hitler is studied, along with the 300-year-old 'Berlin Gold Hat', a late Bronze Age artefact made of thin gold leaf

Mike climbs Kodiak Island's highest peaks to take down a mountain goat, then repels down sheer cliffs to bring home his harvest

In Idaho, Kidd and Harry Youren use explosives to battle a deep freeze to protect their cattle's drinking supply. In Montana, Jake Herak's young pups learn a lesson in lion hunting

The story of the Great Pyramid at Giza, and how one discovery is rewriting what is now known about how the pyramids were built

An exploration of the ancient Egyptian obsession with death and the afterlife, including the secrets behind Egyptians' worship of the pyramid shape

Darrell's pupil has a gothic graduation, and Kenny uncovers a new career opportunity

Rene's daughter demonstrates her great eye, the Schulz-Passantes add to their outdoor options, and the Gambler meets the predators

Indio, California proves to be extremely interesting for Dave, Brandi and Jarrod find the ultimate stash, while Mary's locker misfires

Mary bumps into some vintage art, Ivy adds to his stamp collection and Kenny once again faces his fears

Rick sets his sights on a musket rifle from the 1800s, while a seller tries to flex with a signed autobiography by actor Arnold Schwarzenegger

Rick and Chum appraise a seller's pair of Tyrannosaur teeth. Corey goes to bat for a signed Mark Buerhle jersey, while a set of M*A*S*H' action figures is on Rick's radar

The owner of an automotive boneyard is in the mood to sell. A California collector's kingdom of junk proves home to one of the rarest motorbikes in the world

The bladesmiths are tasked with forging a combat knife from an anti-tank hedgehog, leading to two gruelling rounds of competition filled with frustration and a medical emergency

Troy and Tes find themselves intercepting pythons that are charging toward the rivers. Zak and Aaron venture far west, exploring a remote canal in their ongoing quest

The remaining four contestants face a big test of their endurance as food scarcity reaches an all-time high. One participant's carefully cultivated harvest is stolen by animals

As the season comes to a close, the Clermont Diggers unearth a monster nugget. Meanwhile, the Mineshaft Hunters face a life-or-death emergency

The actor-presenter examines the notion of using human bones as a 'miracle cure' for gout and learns of a truly bizarre Victorian way to lose weight - with tapeworms

Darrell's pupil has a gothic graduation, and Kenny uncovers a new career opportunity

Rene's daughter demonstrates her great eye, the Schulz-Passantes add to their outdoor options, and the Gambler meets the predators

Indio, California proves to be extremely interesting for Dave, Brandi and Jarrod find the ultimate stash, while Mary's locker misfires

Mary bumps into some vintage art, Ivy adds to his stamp collection and Kenny once again faces his fears

The Maya thrived for more than 2,000 years. Today there is possible evidence that the Maya came in contact with extraterrestrial visitors

Troy and Tes find themselves intercepting pythons that are charging toward the rivers. Zak and Aaron venture far west, exploring a remote canal in their ongoing quest

Rick sets his sights on a musket rifle from the 1800s, while a seller tries to flex with a signed autobiography by actor Arnold Schwarzenegger

Rick and Chum appraise a seller's pair of Tyrannosaur teeth. Corey goes to bat for a signed Mark Buerhle jersey, while a set of M*A*S*H' action figures is on Rick's radar

The owner of an automotive boneyard is in the mood to sell. A California collector's kingdom of junk proves home to one of the rarest motorbikes in the world