The History Channel

We used to think that Earth was at the center of the universe, but now we know we're not even at the center of our own galaxy. Countless wonders exist between where earth is situated and the massive black hole at the galactic center of our solar system. Within the Milky Way can be found the debris of old, dying stars fueling the birth of new stars and at the galactic center hypervelocity stars get catapulted clear beyond the Milky Way's outer rim at unimaginable speeds. Come along for a guided tour of 100,000 light-year-wide family of stars and stellar phenomena we call The Milky Way.

It sounds like a Hollywood blockbuster: a deadly asteroid is on a collision course with Earth. But in reality, it's only a matter of time before a giant space rock threatens to wipe out civilization. An asteroid took out the dinosaurs sixty-five million years ago. Are we next? This episode analyzes the threat and explores the many ways--from a nuclear bomb to ingenious new technology--that experts are proposing to stop Armageddon.

The planets of our solar system have experienced epic catastrophes throughout their long history, both raining down from outside and bubbling up from within. We'll voyage back in time to investigate the violent events that profoundly shaped the planets, including earth itself. We'll witness stunning revelations about what transformed Mars into a barren, hostile desert...The disaster that changed Venus from temperate to hellish...The impact that blew away Mercury's mantle, turning it into a planetary core...A colossal disturbance that rearranged the orbits of the gas giants...Titanic impacts on Jupiter...And how a lost moon may finally explain Saturn's rings.

What might happen if the first manned mission to Mars crashes hundreds of miles from the rocket that would take them back home? Could they survive the crash, and travel across the brutal Martian surface to their home ship? We'll show what the astronauts would have to do to survive dust storms and space radiation, while extracting vital resources like water from the Martian soil itself. It's a dramatic vision of the very near future, where survival can depend on pre-industrial technology and human ingenuity.

According to the laws of physics we can never travel faster than the speed of light...or can we? Light speed allows us to see things instantly here on Earth, and shows us the entire history of the universe going back nearly 14 billion years. Learn all about light speed, the ultimate constant in the universe and discover ways scientists envision breaking the "light barrier" which may be the only way the star travel of our imaginations ever comes to reality.

We used to think that Earth was at the center of the universe, but now we know we're not even at the center of our own galaxy. Countless wonders exist between where earth is situated and the massive black hole at the galactic center of our solar system. Within the Milky Way can be found the debris of old, dying stars fueling the birth of new stars and at the galactic center hypervelocity stars get catapulted clear beyond the Milky Way's outer rim at unimaginable speeds. Come along for a guided tour of 100,000 light-year-wide family of stars and stellar phenomena we call The Milky Way.

The moon has comforted man for thousands of years. It's been everything from a god to a compass, and the only cosmic body human beings have ever visited. NASA is planning to build a permanent outpost there. Discover how the moon came to be--if you don't already know, you will be astounded.

Without the moon, Earth would be a very different and desolate place today--four hours of sunlight with pitch-black nights, steady 100-mph winds spawning giant hurricanes that last for months, and virtually no complex life forms, much less humans. Safe to say, we probably owe our very existence to the moon. But what if it suddenly disappeared? Solar gravity redirects ocean water that floods coastal spots around the globe. Sea currents shift, resulting in freakish weather patterns. Eventually, earth's axis begins fluctuating wildly and climate change grows more extreme. The poles are tropical jungles and parts of the equator become frigid wastelands. Human evolution starts churning in unpredictable ways or ends completely. Without the moon, the Earth is a very different place.

It's been said that our universe is a cosmic shooting gallery. Gravity is moving everything around and things are bound to collide. Astronomers are attempting to understand how these collisions occur in the dark recesses of space. Learn about collisional families, which are clusters of comets and asteroids; planetary collisions; mass extinction impacts involving asteroids and comets; stars collisions; and galaxy cluster collisions. Cutting-edge computer graphics are used to bring this series down to earth as the heavens yield their greatest secrets.

Have planet hunters finally found proof of other Earthlike worlds? Astronomers have now discovered over two hundred alien worlds, beyond our solar system, that were unknown just a decade ago. Discover planets that rage with fiery hurricanes and bizarre planets covered by water so dense that it forms a kind of hot ice. Among these weird worlds, Earth actually seems like the oddball with the right conditions for life.

Centuries ago the prophet Nostradamus had visions of the end of our modern world. Now, scholars decipher his mysterious predictions and learn of terrible tragedies and catastrophic events that threaten to annihilate global populations. Nostradamus has successfully predicted the rise of Hitler, the assassination of John F. Kennedy, the detonation of the atomic bomb, and countless other events. Many fear that the remaining unfulfilled prophecies of Nostradamus will manifest before our very eyes. At Radius Engineering in Texas, Walton McCarthy shows state of the art underground shelters to a concerned family and in South Florida, Billy Carson of Fort Terra Nova meets with a prospective client interested in joining an underground shelter community large enough to house over 350 people.

The Book of Revelation: the New Testament s blueprint of doom foretells the coming of the Four Horsemen of the apocalypse, heralding the end of days. These horsemen will usher in four divine judgments that promise to devastate humanity. While skeptics dismiss it as a mere allegory, every Sunday around the Christian world, church pews reverberate with its dark prophecies. With the potential for global pandemic hiding in every unchecked sneeze, worldwide hunger at an all-time high and the specter of World War III hanging over the Middle East, Revelation s followers believe its dark imagery is coming to light in modern times. Believer and prepper Ray Gano sees current events as a confirmation of the Book of Revelation s predictions and is preparing to face the divine fury of God.

Two men sharing startling visions of the future possess distinctly different backgrounds: Michel de Nostradamus was a French apothecary and healer in the 16th century; he would become the most famous seer in history. His 21st century counterpart is Dr. Bruce Bueno de Mesquita, a renowned political scientist who teaches game theory at New York University and Stanford. While Nostradamus looked to the stars and mysticism to divine his apocalyptic revelations, Dr. Bueno de Mesquita relies on the most omnipotent tool ever designed by man to predict future events: the computer. This special explores not only the commonalities of these men's visions about World War III, famine and the coming of the Anti-Christ, but it also traces the evolution from mysticism to hard math, and determines whether science has always existed in prophecy, manifesting itself in different forms through the ages.

The Union Pacific's historic 844 steam locomotive is the longest running steam train in America. Built in 1944, it has never been retired and still runs on UP's mainlines today. The 844 is so popular that when it goes out on the tracks a huge traffic jam forms on the roads along side as people "chase the train." Host Matt Bown rides the 844 on its annual outing that takes 750 rail fans from Denver to the biggest rodeo in the world in Cheyenne, Wyoming. This episode also looks at the gold rush of the 1850s.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

SWAT (Special Weapons and Tactics) teams leap into the middle of some of the most dangerous situations around. Follow them as they plan to rescue dozens of hostages held at gunpoint in a bar. Track their strategy as they get ready to lay siege to an electronics store held captive by four armed men. Learn how they confront a disgruntled employee who threatens to kill a former co-worker. Interviews with former hostages and the SWAT officers who saved them guide viewers minute-by-minute through real crises. The tactics and technology used by the experts are detailed and dramatized, taking those watching along for the ride whether the ending is happy--or not.

The moon has comforted man for thousands of years. It's been everything from a god to a compass, and the only cosmic body human beings have ever visited. NASA is planning to build a permanent outpost there. Discover how the moon came to be--if you don't already know, you will be astounded.

Without the moon, Earth would be a very different and desolate place today--four hours of sunlight with pitch-black nights, steady 100-mph winds spawning giant hurricanes that last for months, and virtually no complex life forms, much less humans. Safe to say, we probably owe our very existence to the moon. But what if it suddenly disappeared? Solar gravity redirects ocean water that floods coastal spots around the globe. Sea currents shift, resulting in freakish weather patterns. Eventually, earth's axis begins fluctuating wildly and climate change grows more extreme. The poles are tropical jungles and parts of the equator become frigid wastelands. Human evolution starts churning in unpredictable ways or ends completely. Without the moon, the Earth is a very different place.

It's been said that our universe is a cosmic shooting gallery. Gravity is moving everything around and things are bound to collide. Astronomers are attempting to understand how these collisions occur in the dark recesses of space. Learn about collisional families, which are clusters of comets and asteroids; planetary collisions; mass extinction impacts involving asteroids and comets; stars collisions; and galaxy cluster collisions. Cutting-edge computer graphics are used to bring this series down to earth as the heavens yield their greatest secrets.