Doomsday Voyage (1972)

Ground control has been receiving strange transmissions from the three remaining residents of the Solaris space station. When cosmonaut and psychologist Kris Kelvin is sent to investigate, he experiences the strange phenomena that afflict the Solaris crew, sending him on a voyage into the darkest recesses of his own consciousness. In Solaris, legendary Russian filmmaker Andrei Tarkovsky creates a brilliantly original science fiction epic that challenges our preconceived notions of love, truth, and humanity itself.

The Solaris mission has established a base on a planet that appears to host some kind of intelligence, but the details are hazy and very secret. After the mysterious demise of one of the three scientists on the base, the main character is sent out to replace him. He finds the station run-down and the two remaining scientists cold and secretive. When he also encounters his wife who has been dead for seven years, he begins to appreciate the baffling nature of the alien intelligence.

Brand-new evidence reveals the secrets of a Nazi program to build a nuclear bomb, and using cutting-edge science and tech, experts uncover classified files that reveal how closer Hitler came to this terrifying superweapon.

A massive supervolcano beneath Naples, Italy may be on the verge of erupting again, which could have apocalyptic consequences across the planet. Rob Nelson and Stefan Burns use cutting-edge technology to investigate this is disturbing new evidence.

Julius Caesar's relentless pursuit of power pits him against a mighty force, the battle-hardened tribes of Gaul who once roamed France. The Roman General wants to consolidate power in Rome and decides that military victory and conquest is his route to the top. He sets up to bring all of Gaul under his control, triggering a series of events that would bring his army to the brink of defeat. For centuries the truth about exactly what happened has been shrouded in mystery. Now archaeologists are uncovering what really happened. This documentary explores the events of the war and the forgotten stories of the Gaul people themselves.

They were once some of the most advanced structures and facilities on the planet, standing at the cutting-edge of design and construction. Today they are abandoned, dangerous, some of them even deadly. From uninhabited cities to empty factories, these long-forgotten engineering marvels are scattered around the globe. Science Channel uncovers why some of the world's most advanced architectural achievements were eventually left behind in the all-new series Mysteries of the Abandoned. Eerie ghost ships stranded in an alien desert, sinister ruins known as the Dragon's Teeth, and a ghostly complex with a bloody past are deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

On June 30, 1908, one of the biggest explosions in history rocked a forested region in Siberia. The theories of what happened are as widespread as the damage the fireball caused. Some speculate asteroids, space aliens and black holes were the culprit. Others focus on the earth, pinning the blame on everything from subterranean volcanoes to acclaimed physicist Nikola Tesla. Join the ongoing investigation over what caused one of the biggest explosions in history.

A strange deserted city in America's heartland, an eerie gigantic wall deep in snowcapped mountains, and a mysterious top-secret Soviet facility are deserted engineering projects. New discoveries reveal how they were built & why they were abandoned.