Science Channel HD

When a sister ship of the Titanic gets embroiled in war with a hidden enemy, the former luxury liner is sent to the bottom of the ocean; new discoveries and cutting-edge underwater technology might finally reveal the secret history of its sinking.

A cutting edge investigation into an deep-sea graveyard of 25 shipwrecks reveals the dark secrets of the biggest naval battle in history, and using the latest tech, experts follow new evidence into the mysterious abyss of long lost battleships.

A piece of the sun seems to have vanished; the Hubble spots an unidentified object traveling faster than light.

Three cosmonauts mysteriously die as they re-enter Earth's atmosphere and NASA needs to know why; a declassified document shows a CIA plan to use a space disaster as a cover to start World War 3.

Soviet photos of the moon are intercepted by the CIA; a malfunction aboard the ISS, which imperils the whole crew; NASA probe finds evidence of the possibility of life on Mars.

If a massive asteroid collides with Earth, it could end life on the planet as one knows it; new discoveries reveal just how close civilization is to apocalypse and what it would take for the world's leading space agencies to stop it.

The ancient site of Gobekli Tepe is the oldest building complex ever discovered and continues to baffle archaeologists today; now, experts investigate new theories behind its enigmatic construction as a possible commemoration to a cataclysmic event.

The CIA's MK-Ultra program sought to create mind control methods through unethical human experimentation, and now, experts investigate classified documents that reveal the horrific atrocities that were carried out in the pursuit of national security.

The location of King Solomon's Mines has baffled historians for centuries and continues to lure treasure hunters today; archaeologists investigate evidence that may uncover the unlikely truth behind this source of untold riches.

Mary Magdalene played a pivotal role in early Christianity and witnessed the execution and resurrection of Jesus Christ; experts investigate the truth behind her mysterious disappearance and embark on a quest to locate her undiscovered remains.

A subterranean Neolithic temple discovered on the island of Malta contains the skeletal remains of thousands of humans; experts use forensic archaeology to investigate elongated skulls that may unlock the secrets of an advanced, lost civilization.

The crucifixion of Jesus Christ has long been debated by historians due to scarce archaeological evidence of the event; now, experts explore new theories that may reveal the truth behind the traditional yet controversial story of his monumental execution.

After seizing power in 1933, Adolf Hitler began systematically transforming a peaceful German population into a ruthless war machine; experts investigate the innovative methods used by the Nazis to indoctrinate and control the will of its citizens.

Satellite images capture a bizarre pattern of large concentric circles formed in a remote English forest; experts investigate and uncover a top secret experimental bomb testing site critical to WWII British weapons development.

Satellite images capture a strange castle-like structure hidden in the dense and remote woodlands of Scotland; expert archaeologists investigate and uncover an area with a bloody history linked to the birthplace of the world's oldest secret society.

Aerial drone imaging captures a sophisticated complex of lost, ancient Roman buildings in Yorkshire.

Satellite images capture a gigantic oval among a bizarre grid pattern that's carved into the dense forests of New Jersey; experts investigate and reveal a landscape linked to infamous prohibition activity and a prolific WWI munitions factory.

Satellite images capture mysterious stone structures spread across high elevations of the Arizona mountains; experts investigate and uncover ruins of a 19th century Apache fortification linked to the most treacherous migrant route in U.S. history.

Satellite images capture a bizarre pattern of rocks in the shape of a large fingerprint on a remote Swedish island; experts investigate and uncover a mysterious labyrinth with links to ancient Viking black magic and dark, mystical rituals.

Satellite images capture a gigantic oval among a bizarre grid pattern that's carved into the dense forests of New Jersey; experts investigate and reveal a landscape linked to infamous prohibition activity and a prolific WWI munitions factory.