Cosmic Journeys
Stagione 1
201019 episodi
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Episodi
- S 1 E 1 - Is the Universe Infinite?22 novembre 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.Questo video non è al momento disponibile
- S 1 E 2 - When Will Time End?30 gennaio 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.Questo video non è al momento disponibile
- S 1 E 3 - Hubble Legacy Field: One of the Most Important Images of All Time2 luglio 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.Questo video non è al momento disponibile
- S 1 E 4 - The Incredible Journey of Apollo 121 maggio 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.Questo video non è al momento disponibile
- S 1 E 5 - The Largest Black Holes in the Universe26 settembre 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?Questo video non è al momento disponibile
- S 1 E 6 - Supermassive Black Hole at the Center of the Galaxy15 dicembre 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.Questo video non è al momento disponibile
- S 1 E 7 - Are There Other Earths?8 gennaio 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?Questo video non è al momento disponibile
- S 1 E 8 - Collision That Formed the Moon1 marzo 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.Questo video non è al momento disponibile
- S 1 E 9 - Seeing Inside the Sun14 febbraio 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.Questo video non è al momento disponibile
- S 1 E 10 - Star Crash: the Explosion that Transformed Astronomy8 gennaio 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.Questo video non è al momento disponibile
- S 1 E 11 - Black Holes and the High-Energy Universe5 gennaio 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.Questo video non è al momento disponibile
- S 1 E 12 - Hurricane Florence: Storm of the Future4 ottobre 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.Questo video non è al momento disponibile
- S 1 E 13 - Day of the Asteroid5 gennaio 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.Questo video non è al momento disponibile
- S 1 E 14 - Black Hole Starship15 maggio 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?Questo video non è al momento disponibile
- S 1 E 15 - Earth's Most Destructive Supervolcanoes15 maggio 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.Questo video non è al momento disponibile
- S 1 E 16 - The Dream of Interstellar Flight15 maggio 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?Questo video non è al momento disponibile
- S 1 E 17 - Birth of a Black Hole15 maggio 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.Questo video non è al momento disponibile
- S 1 E 18 - Venus: Death of a Planet8 giugno 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.Questo video non è al momento disponibile
- S 1 E 19 - The Most Powerful Objects in the Universe9 settembre 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.Questo video non è al momento disponibile
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