MysteryX HD Thursday

More unexplained phenomena at Big Bend National Park, where a series of incidents has convinced some that secret alien activities are taking place there

A stroll through Great Sand Dunes National Park and Preserve in southern Colorado, where strange lights, animal mutilations and other bizarre incidents have been spotted

A look at Le Cercle, which started in the post-war years as a Catholic conservative group built to broker European rapprochement. Some claim it now control world politics

Dr Fern Riddell and Dr Karen Bellinger examine the mystery of the Bermuda Triangle

Tori Herridge and a team of scientists attempt to piece together the story behind the remains of children and teenagers that were discovered beneath a Leeds shopping arcade

Experts unseal the truth about the potential aliens living and working among humans

Investigating the reasons behind Nasa's denials of UFO accounts and why the organisation has taken measures to prevent its astronauts from telling their stories

In 1969, the US government officially announced it would stop investigating UFOs. However, declassified documents seem to tell another story

An insight into instances in which fighter pilots have been sent to investigate what were thought to be enemy aircraft, only to encounter something entirely unexpected

A visit to the land beyond the coastal fringe, to the vast expanses of Australia where cattle outnumbers people, but those who live here have extraordinary UFO stories to tell

Modern science helps uncover the secrets of health and wealth, from Queen Hatshepsut's death to a case of breast cancer

Homicide detective Rod Demery and forensic scientist Turi King investigate an Iron Age victim, so well-preserved that he seems to be peacefully sleeping

An intriguing artefact in a museum in Southwark, south London. This strange brown felt object stands about eight inches high and is covered in 88 human teeth

More unexplained phenomena at Big Bend National Park, where a series of incidents has convinced some that secret alien activities are taking place there

A stroll through Great Sand Dunes National Park and Preserve in southern Colorado, where strange lights, animal mutilations and other bizarre incidents have been spotted

A look at Le Cercle, which started in the post-war years as a Catholic conservative group built to broker European rapprochement. Some claim it now control world politics

Dr Fern Riddell and Dr Karen Bellinger examine the mystery of the Bermuda Triangle

Tori Herridge and a team of scientists attempt to piece together the story behind the remains of children and teenagers that were discovered beneath a Leeds shopping arcade

The Battle of Raphia, fought in 217 BC near modern Rafah, which was a pivotal clash between Ptolemaic Egypt and the Seleucid Empire during the Fourth Syrian War

How the race to develop the first atomic bomb was seen as critical to secure world dominance

How the race to develop the first atomic bomb was seen as critical to secure world dominance

Experts unseal the truth about the potential aliens living and working among humans

Investigating the reasons behind Nasa's denials of UFO accounts and why the organisation has taken measures to prevent its astronauts from telling their stories

In 1969, the US government officially announced it would stop investigating UFOs. However, declassified documents seem to tell another story

The Battle of Raphia, fought in 217 BC near modern Rafah, which was a pivotal clash between Ptolemaic Egypt and the Seleucid Empire during the Fourth Syrian War

A visit to the land beyond the coastal fringe, to the vast expanses of Australia where cattle outnumbers people, but those who live here have extraordinary UFO stories to tell

Modern science helps uncover the secrets of health and wealth, from Queen Hatshepsut's death to a case of breast cancer

Homicide detective Rod Demery and forensic scientist Turi King investigate an Iron Age victim, so well-preserved that he seems to be peacefully sleeping