Science Channel HD An exploration into whether breakthroughs such as high-energy lasers, antigravity technology and super-advanced aircraft are the result of human efforts alone or contact with UFOs. 2026-09-30 Although alien abduction claims are often dismissed as hoaxes or delusions, there are landmark cases that scholars struggle to refute; Calvin Parker retells his harrowing experience of being abducted near the Pascagoula River in Mississippi. 2026-09-30 After the death of his father, a farmer believes he witnessed a UFO; a geologist uncovers debris at the Roswell crash site; after seeing an orb in the sky, a mother suffers radiation-like burns on her body. 2026-09-30 Evidence suggests contact with interstellar travelers in the distant past may have influenced humankind and many of its sacred sites. 2026-09-30 Although alien abduction claims are often dismissed as hoaxes or delusions, there are landmark cases that scholars struggle to refute; Calvin Parker retells his harrowing experience of being abducted near the Pascagoula River in Mississippi. 2026-09-30 After the death of his father, a farmer believes he witnessed a UFO; a geologist uncovers debris at the Roswell crash site; after seeing an orb in the sky, a mother suffers radiation-like burns on her body. 2026-09-30 Evidence suggests contact with interstellar travelers in the distant past may have influenced humankind and many of its sacred sites. 2026-09-30 An exploration into whether breakthroughs such as high-energy lasers, antigravity technology and super-advanced aircraft are the result of human efforts alone or contact with UFOs. 2026-09-30 In 1953, a team of archaeologists uncovers a bizarre, plastered human skull in the ancient city of Jericho; experts investigate the mysterious purpose and identity behind this 9,000-year-old clay-covered artifact. 2026-09-30 Investigating whether a gold death mask is the face of a king who fought in the Trojan Wars; three ancient chalk carvings could be the secret to constructing Stonehenge; how a printing plate from the UK Treasury ended up in an Austrian lake. 2026-09-30 A distant planet shows an Earth-like atmosphere; a glowing light suggests an atmosphere on the Moon; why there are blueberries on Mars. 2026-09-30 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. 2026-09-30 Recently discovered documents show NASA's secret plan B for failure of the first moon landing; a Soyuz capsule carrying NASA astronaut Peggy Whitson back to Earth goes missing; NASA's Cassini mission unravels a three-hundred-year-old. 2026-09-30 Supernovas are the violent death of giant stars, and new discoveries reveal that these cataclysmic events create the elements that are essential to all life in the universe. 2026-09-30 New discoveries cause astronomers to question if the Big Bang really happened; using the latest science, they investigate if it wasn't just the start of the universe but many mysterious multiverses. 2026-09-30 The discovery of extraterrestrial life might face an impossible challenge: the physics of the universe itself; using cutting-edge tech, experts might be on the verge of a groundbreaking find, and the evidence could already be in hand. 2026-09-30 A barge carries an entire train along Alaska's high seas; a flying ambulance saves lives at 14,000 feet; 16 missiles stand by to prevent a nuclear disaster. 2026-09-30 An airport made from nothing but water and ice; an Alaskan fish factory churns out millions of pounds of seafood a day; hardy vehicles brave the arctic to travel across the tundra. 2026-09-30 Alaskan engineers build a massive dam to power an entire town; the world's largest helicopters; Alaska's largest boat lift hauls a 400-ton fishing ship in high winds. 2026-09-30 A ship built to endure tsunami size waves travels on a highway unlike any other in North America; a fleet of machines combats a huge flood in the Arctic Circle; the biggest, most powerful wind turbines in Alaska. 2026-09-30 The Yeti, a machine with 588 sharp teeth, helps keep an airport running; tugboats break the ice in an Alaskan port; soldiers stationed at the coldest army post in the US. 2026-09-30 Alaska's Coast Guard fights dangerous waters to maintain buoys; machinery finds big rewards 800 feet below Alaska's surface; Alaskans build a steel ferry. 2026-09-30 Electronic warfare, drones and AI-driven soldiers define modern combat. Learn more about the digitized battlefield with enhanced soldiers, killer robots and lethal autonomous weapons. 2026-09-30 Originally for reconnaissance, drones now carry missiles and bombs; the Reaper, a hunter-killer, exemplifies advanced tech and our path towards AI; exploring unmanned warfare. 2026-09-30 Directed energy weapons, once only seen in science fiction, are now reality. They can disable cities' circuits and destroy missiles, heralding space warfare. 2026-10-01 Despite bans, dangerous chemical weapons are still used by certain regimes. Explore how these weapons are used and how they can possibly contribute to the threat of future biological warfare. 2026-10-01 Weapons of mass destruction now include chemical, hypersonic and cyber threats. Like any weapon, cyberattacks can cripple nations, threatening society's survival. 2026-10-01 Don Wildman investigates the story behind the creation of the first atomic bomb, examining the secret cities, high stakes and Earth-shattering decisions that would bring the world's greatest scientific minds together and change history forever. 2026-10-01 Despite bans, dangerous chemical weapons are still used by certain regimes. Explore how these weapons are used and how they can possibly contribute to the threat of future biological warfare. 2026-10-01 Weapons of mass destruction now include chemical, hypersonic and cyber threats. Like any weapon, cyberattacks can cripple nations, threatening society's survival. 2026-10-01 Don Wildman investigates the story behind the creation of the first atomic bomb, examining the secret cities, high stakes and Earth-shattering decisions that would bring the world's greatest scientific minds together and change history forever. 2026-10-01 Directed energy weapons, once only seen in science fiction, are now reality. They can disable cities' circuits and destroy missiles, heralding space warfare. 2026-10-01 The Yeti, a machine with 588 sharp teeth, helps keep an airport running; tugboats break the ice in an Alaskan port; soldiers stationed at the coldest army post in the US. 2026-10-01 Alaska's Coast Guard fights dangerous waters to maintain buoys; machinery finds big rewards 800 feet below Alaska's surface; Alaskans build a steel ferry. 2026-10-01 Spaceships powered by atomic bombs; artificial rings encircle an entire star; Neil Armstrong's transmission feed cuts off when he spots strange lights on the moon; how can lightning talk to itself. 2026-10-01 Astronauts evacuate when a mystery object hurtles toward the ISS; a NASA secret agent goes undercover to retrieve missing moon rocks; scientists struggle to find answers when they discover a huge void at the edge of the solar system. 2026-10-01 Two astronauts trapped in the vacuum of space face a horrible death; the first close up images of Pluto show an alien landscape; residents of Houston struggle to explain videos of unidentified flying lights captured above their city at night. 2026-10-01 Neutron stars are strange and violent phenomena that defy the laws of physics, and new discoveries reveal that these bizarre nightmares are far more deadly than previously believed, with the power to destroy planets and even other stars. 2026-10-01 Dark matter and dark energy are locked in an epic battle for control of the cosmos, and the winner will determine the fate of the universe; new discoveries might reveal which force will emerge victorious. 2026-10-01 This decaying fortress once stood between the Ancient Roman and Persian Empires; though the stronghold's location attracted great wealth, it also attracted attention from unfriendly neighbors. 2026-10-01 In modern-day Turkey, on the coast of the Aegean Sea, archaeologists discovered hilltop ruins that are believed to be the site of one of the world's most enduring stories -- the legend of Troy and the Trojan Horse. 2026-10-01 In the Turkish capital, ambitious plans for a new amusement park are disrupted by financial, mechanical and political problems, forcing the park to close; now its old roller coasters stand as symbols of excess on the city skyline. 2026-10-01 On a picturesque island off the coast of Brazil, this penal colony was once the site of a dramatic prisoner uprising; among the ruins lies the story of the violent rebellion and the recapturing of the island by military forces. 2026-10-01 A teenage girl in Korea is martyred in prison and becomes a national hero; the facility where she was held stands in remembrance of her bravery and the Korean struggle for independence. 2026-10-01 Formerly known as one of the toughest prisons in America, this massive complex was once home to medical experiments and a chaotic hostage situation; it's better remembered as the setting for the iconic opening scene of "The Blues Brothers.". 2026-10-01 Conspiracies swirl around an abandoned military base in Long Island, where it's alleged that covert government experiments took place underground; experts discuss the critical role that the base played in defending America's coastline. 2026-10-01 Adolph Hitler disappears from the world in an apparent suicide at the end of World War II, but theories of his possible escape continue to circulate; experts use forensic science to examine remains that could finally solve the mystery of his fate. 2026-10-01 Brand-new evidence reveals the secrets of a Nazi program to build a nuclear bomb; using cutting-edge science and technology, experts uncover classified files that reveal how close Hitler came to this terrifying super weapon. 2026-10-01 Using cutting-edge forensic analyses, some of the world's leading investigative experts uncover the stunning truth behind compelling mysteries from ancient times to the recent past. 2026-10-02