Discovery History Thursday

How did pictures from the Hubble telescope make the comet of the century look like an alien spacecraft? Has earth already been invaded by alien organisms?

The crew of HMS Ark Royal calls in a massive naval tanker to help refuel the vessel en route to the world's largest naval base in Virginia

Air power is very important in war, but requires infrastructure such as airfields that limit where it can be used. How did naval solutions help overcome this problem?

Rob Nelson examines bizarre markings that suggest a violent clash between prehistoric beasts, and in California, he investigates whether a strange lake might be home to alien life

Modern-day treasure hunter Drew Pritchard heads to Petworth in West Sussex - the antiques capital of the south of England. He also bids on an unusual fire screen in Lancashire

Joiner Robin Johnson fixes a broken Boston rocker. Paper conservator Ashleigh Brown restores a vintage theatre prop, and blacksmith Nev Morris works on an iron gate.

Bruce Crompton and his team embark on a tour across Europe to buy and restore some of the Second World War's rarest tanks

Marine archaeologists reveal the secrets of the sunken town of Baiae, which lies on the seabed of the Bay of Napless

The ship's crew enjoys some down time in the Florida sunshine, but some sailors have their shore leave cancelled to prepare for a royal visitor

Modern-day treasure hunter Drew Pritchard heads to Petworth in West Sussex - the antiques capital of the south of England. He also bids on an unusual fire screen in Lancashire

Bruce Crompton is doing up a wartime German tank engine so that he can pay for Glenn Miller's army uniform, a special Second World War relic

In Lancashire, Henry Cole and Sam Lovegrove explore a garage packed with hundreds of treasures and trinkets. They encounter various military vehicles and a lovely old petrol pump

Bike guru Henry Cole and ace mechanic Sam Lovegrove head across the sea to Northern Ireland, searching for collections they've never seen before.

Rob Nelson heads to California to investigate a network for major fault lines that could set off a mega-quake. Plus, he explores a mysterious sinkhole

Looking at the mysterious trails on the lunar surface near the Apollo landing sites, as well as a strange space object

The men who made America an economic superpower, beginning with the battle between John D Rockefeller and Thomas Scott for control of America's new oil industry

Bruce and the team hunt down the rarest and most inventive spy gear used during the Second World War, from a rare Enigma machine in Italy to a special pencil in the UK

At a stately home in Staffordshire, Drew Pritchard uncovers a hidden 19th-century gem that its owners were oblivious to

Sculptor Nick Elphick is tasked with recreating the missing parts of a vintage deer skeleton. Furniture restorer Steve Norman rebuilds a rosewood sofa

The adventure in Northern Ireland continues. Bike guru Henry Cole and ace mechanic Sam Lovegrove hunt down some army vehicles, tractors and some very well-hidden land rovers

Bike guru Henry Cole and ace mechanic Sam Lovegrove are in the Queen's realm as they visit a shed in the shadow of Windsor Castle

Bruce Crompton buys a rare Sherman tank in Ohio. However, before he sells it on it he wants to boost its authenticity and value, so consulted a tank expert for advice

At a stately home in Staffordshire, Drew Pritchard uncovers a hidden 19th-century gem that its owners were oblivious to

The men who made America an economic superpower, beginning with the battle between John D Rockefeller and Thomas Scott for control of America's new oil industry

Sculptor Nick Elphick is tasked with recreating the missing parts of a vintage deer skeleton. Furniture restorer Steve Norman rebuilds a rosewood sofa

Buying goods from home

Buying goods from home

Looking at the mysterious trails on the lunar surface near the Apollo landing sites, as well as a strange space object