Watch Cosmic Journeys

Planet hunters have found that most sun-like stars are ringed with giant planets that crowd their parent stars and leave no room for planets like ours. New theories of planet formation describe a series of violent, dynamic events. How did Earth survive?

Asteroids racing through the solar system have smashed into Earth before. What are the chances we'll get hit again? Armed with new defensive technologies, scientists are getting ready for the day, a decade, century from now: the Day of the Asteroid.

A fury is building on the surface of the Sun -high-velocity jets, a fiery wave that reaches 100,000 kilometers high, rising loops of electrified gas. What's driving these strange phenomena? How will they affect planet Earth?

Hubble's most iconic images are bought to life to in this exploration of some of the most important questions facing astronomers today. Hubble delivers us into colliding galaxies, the birth and death of stars, the formation of solar systems.

This video explores the famous solar system in the making, Beta Pictoris. Around this young hot star, a vast disk of dust and gas is now forming comets, asteroids, and planets.

This episode explores the technological challenges of the long voyage out into the galaxy. What imperatives will define the mission when it finally launches: exploration and science, or a struggle to survive?

Through its turbulent history, the continent of The frozen continent of Antarctica has played an important role in the evolution of Earth's surface. See how its fate is linked to the fate of the world we know.

What are the energy extremes that define our universe? And how much power can the cosmos wield? Climb a ladder of increasingly powerful events, from frigid gas clouds to nuclear explosions, and travel out to the seething environments of black holes. Find out where Earth fits in the vast power scales of the cosmos.

They are eruptions so vast, so Earth-shattering, they have changed the history of our planet. Climate collapse. Toxic turmoil. Mass extinction. They are Earth's largest and most destructive Supervolcanoes.

Scientists have been reconstructing the history of the Moon by scouring its surface, mapping its mountains and craters, and probing its interior. Find out what the origins of the Moon can tell us about our own planet's beginnings.

A small cadre of scientists is attempting to revolutionize space travel and exploration. This action-packed episode explores a big dream at the moment of its birth, taking us along on dramatic balloon and flights into colorful geomagnetic storms.

How long will the Universe as we know it survive? The answer depends on whether Stephen Hawking's theory about how black holes decay is right. These strange dense objects are like a clock that tick down to a distant moment when all matter and energy will dissipate into the void.

How long will the Universe as we know it survive? The answer depends on whether Stephen Hawking's theory about how black holes decay is right. These strange dense objects are like a clock that tick down to a distant moment when all matter and energy will dissipate into the void.

One of the deepest mysteries about how our universe came to be may finally be yielding to human investigation.

Now tens of billions of kilometers from Earth, the two Voyager spacecraft are streaking out into the void. What will we learn about the Galaxy, the Universe, and ourselves from Voyager's epic Journey to the stars?

There are signs that Earth's great stores of ice are beginning to melt. With sea levels beginning to rise, scientists are looking back at climates past to see where our planet may be headed 1000 into the future and beyond.

Join a small team of rocket designers as they open a window into the future of space travel.

It was one of the greatest mysteries in modern science: a series of brief but extremely bright flashes of ultra-high energy light coming from somewhere out in space. What can we learn from the violent birth of a black hole?

Over the next decade, the United States, Japan, India, China, Russia, and even private companies, are planning to send spacecraft to explore the moon. These missions are looking for resources that may one day allow humans to settle permanently in space.

Cosmology has been turned on its head by a stunning discovery that the universe is flying apart in all directions at an ever-increasing rate. The scientists who made this discovery were awarded the Nobel Prize in Physics.

You won't want this video to end. Go behind the scenes on the space shuttle Endeavour's...

Scientists are on the hunt for planets beyond our solar system and redefining what planets might need to spawn life.

Many astronomers now conclude that what we can see, the stars and galaxies that stretch out to the limits of our vision, represent only a small fraction of all there is. Does the universe go on forever? Where do we fit within it?

This episode climbs a ladder of increasingly powerful events, from frigid gas clouds to nuclear explosions, on out to the seething environments of black holes. The idea is to locate Earth within the vast power scales that define our universe.

From the fires of our Sun's birth, twin planets emerged: Venus and Earth. Nature draped one world in the greens and blues of life, while enveloping the other in acid clouds... high heat... and volcanic flows. Why did Venus take such a disastrous turn?

Pandora is the idyllic blue world featured in the movie Avatar. It's location is a real place: Alpha Centauri, the nearest star to our Sun and the most likely destination for humanity's first interstellar voyage.

The search for Earth-like planets is reaching a fever-pitch. Does the evidence so far help shed light on the ancient question: Is the galaxy filled with life, or is Earth just a beautiful, lonely aberration?

Astronomers tracking stars at the center of the galaxy have found the best proof to date that black holes exist. Now, they are shooting for the first direct image of a black hole.

It's the ultimate buddy movie. Forty years ago, astronauts Pete Conrad and Alan Bean walked on the moon in what may be the most important of the six Apollo moon missions - and had a blast along the way.

How long will the Universe as we know it survive? The answer depends on whether Stephen Hawking's theory about how black holes decay is right. SpaceRip in collaboration with Space.com.

The mind-blowing answer comes from a theory describing the first micro-moments of our universe. SpaceRipTV in collaboration with Space.com. Narrated by Space.com executive producer Dave Brody.

The largest black hole measured to date is a whopping 18 billion times the mass of the Sun. Monsters like this wreak havoc on the cosmos while setting the stage for worlds like ours. From SpaceRipTV in collaboration with Space.com.

Hurricanes and typhoons are creatures of tropical seas that sweep up heat-laden waters, converting it to wind, rain, and waves. Why do a rare few evolve into colossal monsters, that leave in their wake a trail of destruction, death, and despair?

Why some tropical storms erupt into monster hurricanes capable of wrecking coastlines. Can they be predicted? A SpaceRipTV original with Space.com.

How a violent impact may have ruined Mars' chances to become Earth-like. A SpaceRip TV original in collaboratoin with Space.com.

From the mysterious moons of Saturn comes evidence of possible subsurface oceans and the pre-conditions for life. A SpaceRip TV original, in collaboration with Space.com.

How solar eruptions could threaten our high-tech society. A SpaceRipTV original, in collaboration with Space.com.

A new space race is on, with half a dozen countries launching missions to explore the moon. The goal is to pave the way for a permanent human presence. A SpaceRip TV original, in collaboration with Space.com.