We countdown the greatest moments in NASA's nearly sixty year history, revealing the incredible stories behind the missions and discoveries that have remade our understanding of the Final Frontier.
A declassified letter written by President Kennedy demands the CIA share its UFO data with NASA. A bizarre pattern on the surface of Mars could be a coded alien message. Investigators are shocked to find a rocket crash-landed in a crater on the Moon.
Jupiter is far hotter than it should be, and scientists don't understand why. The Curiosity Rover finds something strange on Mars. Could it be a lost spacecraft or something far more sinister? Detectives turn to NASA for help with a murder cold case.
New research is beginning to reveal a hidden force in the universe - one that penetrates space with trillions of invisible connections, instantly linking every place in our world and joining our future with our past. Is the Force with us?
Every 17 minutes, someone is killed with a gun. It's a wave of violence that political debate can't seem to stop. Is this an epidemic that scientists can help cure? Could gun crime be a virus?
For NASA to send a person Mars, they need to build the most powerful rocket ever built. Discover inside story behind the Orion Space Craft, an engineering feat designed to sustain astronauts for years in one of the universe’s harshest environments.
A 73-story glass skyscraper in London is an engineering marvel. 11,000 exterior glass panels form this mega tower's façade. It's colossal concrete core supports luxury apartments, a hotel, and nearly 600,000 square feet of office space.
Discover what it took to build the largest and most sophisticated radio telescope on the planet. This engineering colossus will help astronomers explore galaxies and planets billions of light years away, and might help discover extraterrestrial life.
Go inside the ambitious engineering project that remade the famous Panama Canal. Billions of dollars were spent to move millions of cubic tons of earth, and ultimately, the canal will be able to accommodate the biggest ships in the world.
Discover what it took to build the world's tallest freestanding tower, the Tokyo Skytree. This record-breaking marvel faces some of the most deadly disasters on the planet, and must brave earthquakes and extremely high winds.
Deep in the jungles of Mexico, the lost city of Chichen Itza contains ancient secrets of a mysterious civilization. Follow the scientists working to find how the Chichen Itza was built and how the bloody rite of human sacrifice shaped the city.
New evidence could help solve some of the Great Pyramid’s greatest mysteries. Follow the investigation into how it was built, revealing the truth behind its hidden tombs and deepest secrets.
A team of shipbuilders are building a giant tanker the size of two football fields. But as a potentially deadly typhoon approaches the shipyard and construction problems mount, they will be under the gun to complete this massive project in time.
Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization that operates below. In Ohio, he tries to uncover the ancient secrets of a mound shaped like a serpent.
Rob Nelson heads to California to investigate a network for major fault lines that could set off an unprecedented mega-quake. Then, he explores a mysterious sinkhole that some believe is an endless pit to the center of the Earth.
Some of the world's most incredible engineering projects are now deserted. Revisit a Soviet megastructure, a massive Nazi brainwashing complex, and a dangerous desert pass to find out how they were built and why they were mysteriously abandoned.
What’s it like to leave earth to explore the unknown? What happens when you’re in space and something goes terribly wrong? Secret Space Escapes reveals terrifying accidents, fights for survival, and stories of close calls and near misses by the astronauts who survived them.
Countless mysterious objects have been spotted in the sky and many astronauts have reported seeing UFOs. NASA's Unexplained Files reveals groundbreaking footage and interviews from both astronauts and scientists to explore the idea that there could be life outside of our planet.
Hosted by Morgan Freeman, Through the Wormhole explores the deepest mysteries of existence - the questions that have puzzled mankind for eternity. This series brings together the brightest minds from the very edges of Science to reveal the extraordinary truth of our Universe.
The Rosetta mission that made historic discoveries on Comet 67P comes to a dramatic end. The spacecraft that brought back incredible photos and ground-breaking science will crash onto the comet’s surface.
Space's Deepest Secrets shares the stories of the men and women who pushed their ingenuity and curiosity beyond the limits to uncover some of the most groundbreaking findings in the history of space exploration.
Meet the scientists and modern explorers determined to send humans to Mars. As NASA builds its first spacecraft to carry astronauts to Mars and visionaries devise extraterrestrial colonies, our future on the Red Planet might be sooner than we think.