Cosmic Journeys
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- S1 A1 – Is the Universe Infinite?22 november 201025minExplore the biggest question of all. How far do the stars stretch out into space? And what's beyond them? In modern times, we built giant telescopes that have allowed us to cast our gaze deep into the universe. Astronomers have been able to look back to near the time of its birth. They've reconstructed the course of cosmic history in astonishing detail.Videon är inte tillgänglig för tillfället
- S1 A2 – When Will Time End?30 januari 201525minTime is flying by on this busy, crowded planet as life changes from second to second. At the same time, the arc of the human lifespan is getting longer: 67 years is the global average, up from just 20 years in the Stone Age. How much time does the universe have? The answer may depend on whether Stephen Hawking was right in his theory that describes how black holes shed mass and eventually decay.Videon är inte tillgänglig för tillfället
- S1 A3 – Hubble Legacy Field: One of the Most Important Images of All Time2 juli 20199minSince its launch in 1990, the Hubble space telescope has completed 1.5 million observations. The Hubble team has now released what may be their most detailed image of the deep universe. The Hubble Legacy Field is a mosaic of 7,500 images that tells the story of our universe going back to nearly the time of the big bang. It's a crowning achievement in this golden age of astronomy.Videon är inte tillgänglig för tillfället
- S1 A4 – The Incredible Journey of Apollo 121 maj 201925minThis is the ultimate buddy movie. November 14, 1969. Three astronauts with spacesuits, food, water, and a battery of scientific and communications equipment prepared to fly to the moon. Thousands gathered at the Kennedy Space Center in Florida. How would the launch fare in a powerful electrical storm now gathering above the launch pad? That was just the start of Apollo 12's incredible journey.Videon är inte tillgänglig för tillfället
- S1 A5 – The Largest Black Holes in the Universe26 september 200925minOur Milky Way Galaxy is thought to harbor millions of black holes, the ultra dense remnants of dead stars. But now, in the universe far beyond our galaxy, there's evidence of something far more ominous. A breed of black holes that has reached incomprehensible size and destructive power. Just how large, and violent, and strange can they get?Videon är inte tillgänglig för tillfället
- S1 A6 – Supermassive Black Hole at the Center of the Galaxy15 december 201731minFeel the pull of the largest object in our galaxy, a supermassive black hole that dominates its central region. Astronomers are discovering its properties by probing the stars and ultra-dense objects that are buzzing around it. Find out why scientists are eager to image it directly.Videon är inte tillgänglig för tillfället
- S1 A7 – Are There Other Earths?8 januari 201835minScientists, wielding sensitive new telescopes and "big data" tools, have detected planets around thousands of stars; some Sun-like and some very different from our star. Many newly discovered "exoplanets" lie in "habitable zones," where liquid water may support the chemistry that enables biology. How will astronomers discover if we have company in the cosmos and where they live?Videon är inte tillgänglig för tillfället
- S1 A8 – Collision That Formed the Moon1 mars 20189minOver five decades ago, Apollo astronauts brought back to Earth a wide variety of rocks from the Moon. Analysis of these rocks gave rise to a bold new set of ideas describing the origin of the Moon in a violent collision with another planet. Scientists like Robin Canup have recently been testing a range of predictions of this Giant Impact theory using a new generation of powerful supercomputers.Videon är inte tillgänglig för tillfället
- S1 A9 – Seeing Inside the Sun14 februari 201810minDr. Robert Stein, professor of Physics and Astronomy at Michigan State Universe, has long envisioned a day when he could use supercomputer programs to "see" through the roiling surface of the sun to its dynamic interior. He is searching for mechanisms that drive the violent outbursts known as coronal mass ejections, or CMEs, known to disrupt the electrical systems that power our civilization.Videon är inte tillgänglig för tillfället
- S1 A10 – Star Crash: the Explosion that Transformed Astronomy8 januari 201815minA startling collision in an ancient galaxy slews Earth's largest telescopes to a spot in the Hydra constellation. Two rapidly spinning neutron stars have violently merged to form a possible black hole. And, for the first time, astronomers see its electromagnetic flash and hear its gravitational thunder as they watch new elements being born.Videon är inte tillgänglig för tillfället
- S1 A11 – Black Holes and the High-Energy Universe5 januari 201724minAstronomers are probing the high-energy cosmic frontier with a series of key missions: Fermi, Swift, Chandra, NuSTAR, and Hubble. Their goal: to find out how the universe works on a fundamental level. This video was inspired by a NASA event at the Smithsonian National Air and Space Museum, where leading scientists delivered the latest news about black holes, supernovae, and gamma ray bursts.Videon är inte tillgänglig för tillfället
- S1 A12 – Hurricane Florence: Storm of the Future4 oktober 201818minHurricane Florence offers a glimpse of the rising dangers posed by tropical storms and other major weather systems to American coastal states. Populations in these regions are steadily rising, not just along the beach but inland as well. With ocean temperatures rising, hurricanes and tropical storms can transport vast amounts of rain to these inland communities, causing catastrophic flooding.Videon är inte tillgänglig för tillfället
- S1 A13 – Day of the Asteroid5 januari 201725minAsteroids 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 inevitable day, a decade, century, or millennia from now: the Day of the Asteroid.Videon är inte tillgänglig för tillfället
- S1 A14 – Black Hole Starship15 maj 201714minTwo scientists have laid out the basic technical specifications of a black hole powered starship. What vision of the future inspired this strange vehicle? How feasible is it technically? How far could it take humanity one day in the distant future?Videon är inte tillgänglig för tillfället
- S1 A15 – Earth's Most Destructive Supervolcanoes15 maj 201628minThey are eruptions so vast, so Earth-shattering, they have changed the history of our planet. Climate collapse. Toxic turmoil. Mass extinction. Worse than a killer asteroid, or nuclear war, they are Earth's most destructive Supervolcanoes.Videon är inte tillgänglig för tillfället
- S1 A16 – The Dream of Interstellar Flight15 maj 201625minExplore the challenges of interstellar flight and the technological possibilities that may one day send us on a long voyage out into the galaxy. What imperatives will define the mission when it launches and finally arrives: exploration and science, or a struggle for survival?Videon är inte tillgänglig för tillfället
- S1 A17 – Birth of a Black Hole15 maj 201625minIt 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. These gamma ray bursts were first spotted by spy satellites in the 1960s. It took three decades and a revolution in high-energy astronomy for scientists to figure out what they were.Videon är inte tillgänglig för tillfället
- S1 A18 – Venus: Death of a Planet8 juni 201025minWhy did Earth thrive and our sister planet, Venus, became a dead planet alien to life? From the fires of our sun's birth, twin planets emerged. But heir paths diverged, as nature draped one world in the greens and blues of life, while enveloping the other in acid clouds, high heat and volcanic flows. Scientists are looking for clues in Venus' history that explain its disastrous turn for the worst.Videon är inte tillgänglig för tillfället
- S1 A19 – The Most Powerful Objects in the Universe9 september 201025minAll across the immense reaches of time and space, energy is being exchanged, transferred, released, in a great cosmic pinball game we call our universe. This episodes traces the progression of energy events from the smallest and coldest, to the hottest and most powerful in all the cosmos.Videon är inte tillgänglig för tillfället
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