Sky History 2 HD Thursday

The suggestion that that advanced - and perhaps even extraterrestrial - civilisations existed on Earth thousands of years before the present one

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

A look at the events surrounding Raoul Moat's shooting spree in Northumberland during the summer of 2010 and the huge manhunt that led to his arrest

A look at the game-changers of maritime combat-revolutionary ships and the groundbreaking designers behind them

Mighty North American twin the B-25, which delivered the first blow in the fight back against Japan, in one of the most daring and audacious raids of all time

The suggestion that that advanced - and perhaps even extraterrestrial - civilisations existed on Earth thousands of years before the present one

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

Experts give their ideas about what life on Earth might be like for other species after the extinction of the human race

A look at what might happen if humans were to vanish from Earth, assessing the possibility of escaped animals, invasive vines and deadly viruses taking control of the planet

A look at what might happen if humans were to vanish from Earth, assessing the future of LA and New York and considering which animals would be most likely to take over

A hypothetical look at what might happen to the Earth's metallic objects, such as bridges, buildings and gold reserves, if humans ceased to exist

In the world without humans, pythons compete with alligators for control of the Florida Everglades, and Shanghai is sunk by its empty skyscrapers

In 1955, a family of seven in Kentucky fired their guns on an alleged alien attack. This programme assesses what they thought they saw against what they possibly did see

Caroline Roberts, a surviving victim of serial killers Rose and Fred West, revisits the horrific murders committed by the couple during the 1970s

A look at the case of estate agent Suzy Lamplugh, who showed a client round a house in Fulham in July 1986 and was never seen again. Dermot Murnaghan hosts

First-hand accounts and rare archive footage reveal the devastation of the German attack on France

Archival footage and eye-witness accounts illustrate how, as the war progressed from the ground into the sky, young brave pilots gave their all for the Allied cause

The suggestion that that advanced - and perhaps even extraterrestrial - civilisations existed on Earth thousands of years before the present one

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

Caroline Roberts, a surviving victim of serial killers Rose and Fred West, revisits the horrific murders committed by the couple during the 1970s

Aerial archaeologists battle to solve the mystery of the Mayan Empire collapse. Plus, the horrors of the communist lake of death

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth - from hidden worlds to unexplainable natural phenomena

Startling mysteries captured by satellites orbiting the Earth, here featuring the man-eating mountain - a black scar in a remote Australian forest revered by Aboriginal tribes

Forest fires threaten Rust Valley and after his neighbour loses 350 cars, Mike hoards back fuel in case he needs to save his own collection

How, in 2021, the United States government broke a precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena