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The History of Earth - How Our Planet Formed - Full Documentary HD

  • The History of Earth - How Our Planet Formed - Full Documentary HD

    1:31:52

    In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth began to cool, forming a thin crust on its surface. As the cooling continued, water vapor began to escape and condense in the earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.

    It is theorized that the true age of the earth is about 4.6 billion years old, formed at about the same time as the rest of our solar system. The oldest rocks geologists have been able to find are 3.9 billion years old. Using radiometric dating methods to determine the age of rocks means scientists have to rely on when the rock was initially formed (as in - when its internal minerals first cooled). In the infancy of our home planet the entire earth was molten rock - a magma ocean.

    Since we can only measure as far back in time as we had solid rock on this planet, we are limited in how we can measure the real age of the earth. Due to the forces of plate tectonics, our planet is also a very dynamic one; new mountains forming, old ones wearing down, volcanoes melting and reshaping new crust. The continual changing and reshaping of the earth's surface that involves the melting down and reconstructing of old rock has pretty much eliminated most of the original rocks that came with earth when it was newly formed. So the age is a theoretical age.

    When Did Life on Earth Begin?

    Scientists are still trying to unravel one of the greatest mysteries of earth: When did life first appear and how did it happen? It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. That's pretty much all there was for about the next two billion years. Then suddenly those single celled organisms began to evolve into multicellular organisms. Then an unprecedented profusion of life in incredibly complex forms began to fill the oceans. Some crawled from the seas and took residence on land, perhaps to escape predators in the ocean. A cascading chain of new and increasingly differentiated forms of life appeared all over the planet, only to be virtually annihilated by an unexplained mass extinction. It would be the first of several mass extinctions in Earth's history.

    Scientists have been looking increasingly to space to explain these mass extinctions that have been happening almost like clockwork since the beginning of living time. Perhaps we've been getting periodically belted by more space rocks (ie. asteroids), or the collision of neutron stars happening too close for comfort? Each time a mass extinction occurred, life found a way to come back from the brink. Life has tenaciously clung to this small blue planet for the last three billion years. Scientists are finding new cues as to how life first began on earth in some really interesting places - the deep ocean.

  • The Whole History of the Earth and Life 【Finished Edition】

    1:5:45

    Revised edition :
    This is a documentary which portrays the birth of the solar system, the birth of the Earth, and the emergence and evolution of life on Earth depicted through latest research activities.
    Executive producer: prof. Shigenori Maruyama. Supported by Hadean Bioscience Project.
    1. The Origin of the Earth. 00:00
     4.567 billion years ago : The formation of the Solar System.
     4.56 billion years:ago : The formation of the Earth.
     4.55 billion years ago : Giant impact.
    2. Initiation of Plate Tectonics. 02:53
     4.37-4.20 billion years ago : The formation of the atmosphere and ocean.
     4.37-4.20 billion years ago : The initiation plate tectonics.
    3. Birth of Proto-life. 06:57
     4.10(4.20?) billion years ago : The birth of first proto-life.
    4. The Initial Stage of Life. 10:53
     4.37-4.20 billion years ago : The loss of the primordial continent and the generation of a strong geomagnetic field.
     4.20 billion years ago : The emergence of sun-powered life.
     4.10 billion tears ago : Mass extinction.
    5. Second Stage of Evolution of Life. 16:36
     2.90 billion years ago : The emergence of photosynthetic life.
     2.70 billion years ago : Mantle overturn.
    6. Third Stage of the Evolution of Life. 20:35
     2.30 billion years ago : Mass extinction by snowball Earth.
     2.10 billion years ago : From prokaryotes to eukaryotes.
    7: The Dawn of the Cambrian Explosion. 25:07
     1.90-0.80 billion tears ago : The Formation of a Supercontinent.
     700-600 million years ago : The Sturtian Glaciation
     700-600 million years ago : The Leaking Earth.
    8: The Cambrian Explosion. 30:57
     640 million years ago : The Origin of Multicellular Life. The Marinoan Glaciation.
     580 million years ago : Appearance of Ediacaran Fauna. The Gaskiers Glaciation.
     550 million years ago : Evolution Responds to Environmental Changes
     540 million years ago : The First Cambrian Organisms
    9: The Paleozoic Era. 37:06
     600 million years ago : Expanding Habitats.
     540 million years ago : The Co-evolution of Planets and Insects
     550-540 million years ago : The Evolution of Vertebrates
     260-250 million years ago : The Largest Mass extinction of the Phanerozoic Eon. Collision with a Dark nebula
    10: From the Mesozoic to the birth of human beings. 43:23
     Dispersion and amalgamation of continents, and the evolution of life.
     The birth of primates.
    11: The Humanozoic eon : the appearance of human beings and civilization. 50:26
     Evolution into primates.
     The birth of human beings, the fourth animal category : the Humanozoic eon.
     10000 years ago : The Agricultural Revolution.
     5000 years ago : The Urban Revolution.
     2400 years ago : The Religious Revolution.
     300 years ago : The Industrial Revolution.
     The Information Revolution.
    12: Future of the Earth. 57:54
     Challenges for Human society.
     Future of Human society.
     Future of the Earth.
     200 million years later : Formation of the supercontinent.
     400 million years later : Extinction of the C4 plants.
     1 billion years later : Cessation of plate tectonics.
     1.5 billion years later : Disappearance of the ocean.
     4.5 billion years later : Collision between the Milky Way Galaxy and the Andromeda Galaxy.
     8 billion years later : Annihilation of the Earth.
    Kaoru GreenEmerald

  • History Of Earth In 9 Minutes

    9:16

    The history of Earth covers approximately 4.54 billion years, from Earth's formation out of the solar nebula to the present. And we have compressed billions of years of our history into 9 minutes.

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  • Naked Science - Birth of the Earth

    50:06

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    Every other Wednesday we present a new video, so join us to see the truth laid bare...

    How did the Earth evolve to support life.

    Our planet now supports a huge diversity of living creatures requiring very special conditions, but what was the series of events that brought this unique set of conditions together? What did it take to make a world that would support human life? Naked Science takes an imaginary ‘human’ time traveller on a journey back to the moment of formation of our solar system. We meet the scientists who are carrying out their own detective work, uncovering the clues around the world today into what our planet was like 4 and a half billion years ago.

    Our journey begins with the astonishing story of how a giant cloud of interstellar dust and gas collapsed to form the sun and planets. We discover that the intense heat of the early Earth created a molten iron core. This generated a magnetic shield around our planet that protects us, to this day, from the sun’s deadliest particles.

    Many of the features we take for granted on our living planet were forged in the most violent event in our planet’s history. Early in its life, the Earth collided with another planet. Planetary Scientist Robin Canup has modelled the impact using supercomputers. She reveals that the resulting fireball was so energetic it melted the Earth and created the moon. This dramatic impact gave us our tides and seasons.

    We wouldn’t have life today without water. But where our water came from is a mystery that has long puzzled scientists. At a NASA research laboratory, Michael Zolensky studies a recently discovered meteorite that supports the view that water came from space.

    For the first half of its history the Earth had an atmosphere of methane and carbon dioxide we would find impossible to breathe. One clue as to how the earth acquired its oxygen can be found in Australia. Shark Bay in Western Australia is home to strange bacterial mounds called stromatolites. The bacteria in these objects are pumping out oxygen. A few hundred miles away geologist Martin Van Kranendonk shows us a fossil stromatolite, the world’s oldest fossil. The evidence suggests that these strange objects are responsible for creating the air we breathe.

  • Formation of Earth and Solar System Documentary - Space Discovery Documentary

    58:26

    Scientists now believe that our galaxy is filled with solar systems, including up to a billion planets roughly the size of our own. The film employs advanced, data-driven, cinematic-quality visualizations to explore some of the greatest questions in science today: How did Earth become a living planet in the wake of our solar system’s violent birth? What does its history tell us about our chances of finding other worlds that are truly Earth-like?

    Produced by Spitz Creative Media, NCSA’s Advanced Visualization Lab, Thomas Lucas Productions, Inc., in association with Tellus Science Museum. This project has been made possible with support from the Commonwealth of Pennsylvania and the Greater Philadelphia Film Office; funded in part by the National Science Foundation

  • Earth 101 | National Geographic

    3:33

    Earth is the only planet known to maintain life. Find out the origins of our home planet and some of the key ingredients that help make this blue speck in space a unique global ecosystem.
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    #NationalGeographic #Earth #Educational

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  • The Formation of the Solar System in 4K

    6:17

    In beautiful 4K resolution, the story of how our Earth was formed four and a half billion years ago told from the perspective of an asteroid called Bennu (which has survived until now). NASA has sent a satellite to study Bennu and help us learn more about the beginning of our solar system.

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  • Secrets Of Earth: Hindi Documentary

    41:14

    Secrets Of Earth : Hindi Documentary

    Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, Earth's only natural satellite. Earth revolves around the Sun in 365.26 days, a period known as an Earth year. During this time, Earth rotates about its axis about 366.26 times.[n 5]

    Earth's axis of rotation is tilted, producing seasonal variations on the planet's surface. The gravitational interaction between the Earth and Moon causes ocean tides, stabilizes the Earth's orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest of the four terrestrial planets.

    Earth's lithosphere is divided into several rigid tectonic plates that migrate across the surface over periods of many millions of years. About 71% of Earth's surface is covered with water, mostly by oceans.[29] The remaining 29% is land consisting of continents and islands that together have many lakes, rivers and other sources of water that contribute to the hydrosphere. The majority of Earth's polar regions are covered in ice, including the Antarctic ice sheet and the sea ice of the Arctic ice pack. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates the Earth's magnetic field, and a convecting mantle that drives plate tectonics.

    Within the first billion years of Earth's history, life appeared in the oceans and began to affect the Earth's atmosphere and surface, leading to the proliferation of aerobic and anaerobic organisms. Some geological evidence indicates that life may have arisen as much as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties, and geological history have allowed life to evolve and thrive. In the history of the Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. Over 99% of all species[32] that ever lived on Earth are extinct.[33][34] Estimates of the number of species on Earth today vary widely;[35][36][37] most species have not been described.[38] Over 7.4 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Humans have developed diverse societies and cultures; politically, the world has about 200 sovereign states.


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  • Full History of Earth in 10 Minutes

    10:52

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  • The World In 2050 The Real Future Of Earth - Full Documentary HD

    43:43

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    The World In 2050 [The Real Future Of Earth] - Full Documentary HD

    Can you imagine our world in 2050? Can you imagine the earth in 2050? Can you imagine people in 2050? Do you want to know the future of earth? By mid-century there will likely be 9 billion people on the planet, consuming ever more resources and leading ever more technologically complex lives. What will our cities be like? How will we eat in the future of Earth? Will global warming trigger catastrophic changes, or will we be able to engineer our way out of the world climate crisis?

    In the future world demographic changes will certainly be dramatic. Rockefeller University mathematical biologist Joel Cohen says it's likely that by 2050 the majority of the people in the world will live in urban areas of the earth, and will have a significantly higher average age than people today.

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  • Solar System 101 | National Geographic

    4:11

    How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system’s genesis, plus its planets, moons, and asteroids.
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    #NationalGeographic #SolarSystem #Educational

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    National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.

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  • Origin of Life - How Life Started on Earth

    49:54

    Four and a half billion years ago, the young Earth was a hellish place—a seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid atmosphere. Then, in a process that has puzzled scientists for decades, life emerged. But how? Mineralogist Robert Hazen as he journeys around the globe. From an ancient Moroccan market to the Australian Outback, he advances a startling and counterintuitive idea—that the rocks beneath our feet were not only essential to jump-starting life, but that microbial life helped give birth to hundreds of minerals we know and depend on today. It's a theory of the co-evolution of Earth and life that is reshaping the grand-narrative of our planet’s story.

    New evidence emerges on the origins of life


    7 Theories on the Origin of Life


    The Origin of Life on Earth: Theories and Explanations


    Michio Kaku and Sadhguru on the Future Technologies by the year 2100

  • The Milky Way Galaxy Planets | Space Documentary 2020 Full HD 1080p

    1:38:31

    The Milky Way Galaxy Planets | Space Documentary 2020 Full HD 1080p
    The Milky Way Galaxy Planets | Space Documentary 2020 Full HD 1080p
    The Milky Way Galaxy Planets | Space Documentary 2020 Full HD 1080p
    The Milky Way Galaxy Planets, Amazing HD Exploration - BBC Documentary

    This video gives an impression of how common planets are around the stars in the Milky Way. The planets, their orbits and their host stars are all vastly magnified compared to their real separations. A six-year search that surveyed millions of stars using the microlensing technique concluded that planets around stars are the rule rather than the exception. The average number of planets per star is greater than one. This means that there is likely to be a minimum of 1,500 planets within just 50 light-years of Earth.

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  • Our Planet | Forests | FULL EPISODE | Netflix

    48:18

    Experience our planet's natural beauty and examine how climate change impacts all living creatures in this ambitious documentary of spectacular scope.

    In this episode: Examine the fragile interdependence that exists between forests' wide variety of residents, including bald eagles, hunting dogs and Siberian tigers.

    For more information about Forests please visit

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    US Rating: TV-PG. Parental guidance suggested.

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    Our Planet | Forests | FULL EPISODE | Netflix

  • The Earth is Not Alone | Alien Planet

    1:55:45

    People began traveling in space in 1961 in tiny spacecraft called capsules, which were launched from Earth by powerful rockets. Russian crews still travel in this kind of craft, in Soyuz capsules, but Americans now travel into space in shuttles, which are rocket-powered space planes.

    HOW DO HUMANS SURVIVE IN SPACE?
    There is no oxygen in space, so all crewed spacecraft carry a life-support system. This supplies air for people to breathe. The system also includes equipment to keep the air at a comfortable temperature and pressure and to remove carbon dioxide and odors.

    HOW DOES SPACE TRAVEL AFFECT PEOPLE?
    Gravity in space is much weaker than it is on Earth. When people travel in space, they seem to become weightless. This often makes them feel sick. Their bodies do not have to work as hard, because they are not fighting gravity to sit or stand up. If they stay in space for a long time, the lack of gravity makes their muscles start to waste away. Exercise and a special diet help to combat these effects.

    WHAT IS THE FARTHEST ANYONE HAS TRAVELED IN SPACE?
    Astronauts on the APOLLO PROJECT traveled to the Moon, about 239,000 miles (385,000 km) away. Russian cosmonaut Valeri Poliakov traveled a distance of about 174 million miles (280 million km) around Earth while in the Mir space station.

    APOLLO PROJECT
    In the space race of the 1960s, the US Apollo Project beat the Soviet Union by landing the first astronauts on the Moon. The first Moon landing, by Apollo 11, took place on July 20, 1969, when Neil Armstrong and Buzz Aldrin became the first humans to set foot on another world.

    WHAT WAS THE APOLLO SPACECRAFT LIKE?
    The Apollo spacecraft was launched from Earth by the Saturn V rocket. On the launch pad, the whole assembly stood 365 ft (111 m) tall. The spacecraft itself weighed 50 tons (45 metric tons). It was made from three main modules (sections). The command module for flight control housed the three-person crew. The service module carried equipment, fuel, and a rocket motor. The lunar module detached from the craft and landed two astronauts on the Moon’s surface.

    HOW MANY APOLLO LANDINGS WERE THERE?
    There were six Moon landings, beginning with Apollo 11 in July 1969 and ending with Apollo 17 in December 1972. During the missions, 12 astronauts explored the lunar surface for a total of over 80 hours and brought back nearly 880 lb (400 kg) of Moon rock and dust for examination on Earth.

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  • Stephen Hawking’s 7 Predictions of Earth’s Demise in the Next 200 Years

    11:01

    What will happen to our planet in the next 200 years? The most famous scientist since Albert Einstein, Stephen Hawking, who has made profound and inspiring discoveries, predicted an extremely dark and pessimistic future to the Earth and its inhabitants. Here are some of Hawking’s most terrifying predictions on how and when our world will meet its demise.
    Since scientists started toying with genetically engineered viruses to treat human illnesses, they’ve also discovered other possible uses for them. Nowadays, pharmacists are even combining several deadly viruses into a single shot and doing some weird stuff with DNA mixing.
    Hawking was a firm believer in extraterrestrial life, and he was convinced that they will eventually invade our planet. And no, unfortunately, they probably won’t come in peace. In his final work, A Smooth Exit from Eternal Inflation, completed just two weeks before he died, Hawking predicted that our universe will eventually fade into darkness as all the stars run out of energy.
    Although Hawking's life basically depended on artificial intelligence, he didn't trust it at all. He once said that it might just be “the worst invention in the history of our civilization” because it’ll probably replace humans altogether.
    Hawking added that global warming will make the conditions on Earth similar to those on Venus. To save ourselves from problems like overpopulation (and the scarcity of resources that comes with it), pandemics, and pollution, we have to discover new worlds and become a multi-planetary species.

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    TIMESTAMPS
    Genetically modified vaccines will backfire on us. 1:04
    Aliens will invade our planet. 2:36
    The Universe will come to an end. 3:52
    Robots will replace humans. 4:21
    Nuclear weapons will destroy humanity. 5:32
    We'll need to find another planet to live on. 6:03
    The Earth will combust into a ball of fire. 9:17

    SUMMARY
    -We still don't fully understand the long-term damage genetically engineered vaccine concoctions might have.
    -Chances are that cosmic beings will find our floating rock in space and they’ll most likely want to either destroy us or study us like lab rats.
    -Hawking predicted that our universe will eventually fade into darkness as all the stars run out of energy.
    -The scientist believed that artificial intelligence could eventually outsmart and outperform humans or, worse, decide to get rid of us.
    -The development of militarized technology and weapons of mass destruction could lead us to disastrous consequences, which would mean the end of our world.
    -According to Hawking, we have to find another planet to live on within the next 100 years. Otherwise, we’ll die out as a species because Earth has already reached “the point of no return”.
    -Global warming will make the conditions on Earth similar to those on Venus. The average temperature will be about 480°F. Our planet will burst into flames in less than 600 years.

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  • BBC Documentary 2017 - The Complete Cosmos Secrets of the Solar System HD

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  • Deepest Part of The Oceans - Full Documentary HD

    44:54

    Measuring the Greatest Ocean Depth
    The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United States Center for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters. If Mount Everest, the highest mountain on Earth, were placed at this location it would be covered by over one mile of water.

    The first depth measurements in the Mariana Trench were made by the British survey ship HMS Challenger, which was used by the Royal Navy in 1875 to conduct research in the trench. The greatest depth that they recorded at that time was 8,184 meters (26,850 feet).

    In 1951, another Royal Navy vessel, also named the HMS Challenger, returned to the area for additional measurements. They discovered an even deeper location with a depth of 10,900 meters (35,760 feet) determined by echo sounding. The Challenger Deep was named after the Royal Navy vessel that made these measurements.

    In 2009, sonar mapping done by researchers aboard the RV Kilo Moana, operated by the University of Hawaii, determined the depth to be 10,971 meters (35,994 feet) with a potential error of ± 22 meters. The most recent measurement, done in 2010, is the 10,994 meter ( ± 40 meter accuracy) depth reported at the top of this article, measured by the United States Center for Coastal & Ocean Mapping.

  • StoryBots Outer Space | Planets, Sun, Moon, Earth and Stars | Solar System Super Song | Fun Learning

    15:12

    The StoryBots are curious little creatures who live beneath our screens, offering a world of learning and fun for kids. The Emmy Award-winning “Ask the StoryBots” is now streaming on Netflix!

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  • Our Planet | One Planet | FULL EPISODE | Netflix

    49:28

    Experience our planet's natural beauty and examine how climate change impacts all living creatures in this ambitious documentary of spectacular scope.

    In this episode: Witness the planet's breathtaking diversity -- from seabirds carpet-bombing the ocean to wildebeests eluding the wild dogs of the Serengeti.

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    Our Planet | Planet Diversity | FULL EPISODE | Netflix

  • The History of Our Sun - Full Documentary

    43:19

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    The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. It is by far the most important source of energy for life on Earth. Its diameter is about 109 times that of Earth, and its mass is about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System. About three quarters of the Sun's mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.

  • Collision That Formed The Moon

    8:37

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    Over 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 set of ideas describing the origin of the Moon called the Giant Impact Theory. In the last decade, scientists like Robin Canup have been testing a number of predictions of this theory using a new generation of powerful supercomputers.

    In this video, Dr. Canup showcases her recent results. The visualization is a work in progress produced for the upcoming giant screen fulldome film Birth of Planet, with funding from the National Science Foundation.

  • Where Did Earths Water Come From?

    3:08

    When trying to figure out why our planet has water, scientists first had to theorize about how water formed in the universe.

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  • 2,000 Year Old Computer - Decoding the Antikythera Mechanism - Full Documentary HD

    46:40

    A Greek shipwreck holds the remains of an intricate bronze machine that turns out to be the world's first computer. In 1900, a storm blew a boatload of sponge divers off course and forced them to take shelter by the tiny Mediterranean island of Antikythera. Diving the next day, they discovered a 2,000 year-old Greek shipwreck. Among the ship's cargo they hauled up was an unimpressive green lump of corroded bronze. Rusted remnants of gear wheels could be seen on its surface, suggesting some kind of intricate mechanism. The first X-ray studies confirmed that idea, but how it worked and what it was for puzzled scientists for decades. Recently, hi-tech imaging has revealed the extraordinary truth: this unique clockwork machine was the world's first computer. An array of 30 intricate bronze gear wheels, originally housed in a shoebox-size wooden case, was designed to predict the dates of lunar and solar eclipses, track the Moon's subtle motions through the sky, and calculate the dates of significant events such as the Olympic Games. No device of comparable technological sophistication is known from anywhere in the world for at least another 1,000 years. So who was the genius inventor behind it? And what happened to the advanced astronomical and engineering knowledge of its makers? NOVA follows the ingenious sleuthing that finally decoded the truth behind the amazing ancient Greek computer.

    The Antikythera mechanism was designed to predict movements of the sun, moon and planets.

    The artifact was recovered probably in July 1901 from the Antikythera shipwreck off the Greek island of Antikythera. Believed to have been designed and constructed by Greek scientists, the instrument has been dated either between 150 and 100 BC, or, according to a more recent view, in 205 BC.

    After the knowledge of this technology was lost at some point in antiquity, technological artefacts approaching its complexity and workmanship did not appear again until the development of mechanical astronomical clocks in Europe in the fourteenth century.

    All known fragments of the Antikythera mechanism are kept at the National Archaeological Museum, in Athens, along with a number of artistic reconstructions of how the mechanism may have looked.

    Generally referred to as the first known analogue computer, the quality and complexity of the mechanism's manufacture suggests it has undiscovered predecessors made during the Hellenistic period. Its construction relied upon theories of astronomy and mathematics developed by Greek astronomers, and is estimated to have been created around the late second century BC.

    In 1974, Derek de Solla Price concluded from gear settings and inscriptions on the mechanism's faces that it was made about 87 BC and lost only a few years later. Jacques Cousteau and associates visited the wreck in 1976 and recovered coins dated to between 76 and 67 BC. Though its advanced state of corrosion has made it impossible to perform an accurate compositional analysis, it is believed the device was made of a low-tin bronze alloy (of approximately 95% copper, 5% tin). All its instructions are written in Koine Greek, and the consensus among scholars is that the mechanism was made in the Greek-speaking world.

  • How Climate Made History Pt. 1 | Full documentary

    51:23

    A unique combination of natural science and history takes us through the ages and along the entire spectrum of natural forces. The gripping narrative exposes surprising connections between volatile climate shifts and major historical events.

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  • NASA | Evolution of the Moon

    2:42

    From year to year, the moon never seems to change. Craters and other formations appear to be permanent now, but the moon didn't always look like this. Thanks to NASA's Lunar Reconnaissance Orbiter, we now have a better look at some of the moon's history. Learn more in this video!

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  • The Planets: First Look Trailer | BBC Earth

    1:21

    Explore space and our solar system like you've never seen it before, with new series The Planets. The series will explore the dramatic history and spectacular landscapes of our neighbouring planets such as Mars, Jupiter and Saturn. Eight planetary siblings, unfolding over 4.5 billion years. One family. Worlds apart.
    The Planets starts Tuesday 28 May on BBC Two. Coming soon to international audiences.
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    Planet Earth
    Blue Planet
    Planet Earth II
    Planet Dinosaur

    Tha Planets
    This stunningly ambitious series brings to life the most memorable events in the history of the solar system, by using groundbreaking visual effects to tell the thrilling story of all eight planets. Transporting you to the surface of these dynamic worlds to witness the moments of high drama that shaped each one, The Planets reveals how the latest science allows us to unlock their past lives. It pieces together clues of magnificent lost waterfalls on Mars, the mass planetary migrations as they jostled for position early in their history, and even the distant fate of Saturn as one of its moons awakens to form a beautiful water world.

    Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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  • Birth of the Moon

    24:26

    Scientists have been reconstructing the history of the moon by scouring its surface, mapping its mountains and craters, and probing its interior. What are they learning about our own planet's beginnings?

    Decades ago, we sent astronauts to the moon as a symbol of confidence in the face of the great cold war struggle. Landing on the moon was a giant leap for mankind. But it's what the astronauts picked up from the lunar surface that may turn out to be Apollo's greatest legacy.

    When the astronauts of Apollo stepped out of their landing craft, they entered a world draped in fine sticky dust, strewn with rocks, and pocked with craters. They walked and rambled about, picking up rocks that they packed for the return flight.

    Back in earth-bound labs, scientists went to work probing the rocks for clues to one of the most vexing questions in all of science. Where did the moon come from? The answer promised to shed light on an even grander question. Where did Earth come from? And how did it evolve into the planet we know today?

    The nature of the moon began to come into focus four centuries ago. Galileo Galilei had heard of an instrument built by Dutch opticians capable of seeing faraway things as though nearby. Galileo, in many ways the first modern scientist, saw this new instrument as a tool to help settle a long standing question.

    What was the nature of the heavens, and how did the world of men fit within it?

    To some philosophers, the moon was a perfect, crystalline sphere of divine substance, free of Earth's imperfections. Galileo, with his telescope, saw a more familiar reality. He noted mountains and valleys on the moon, features like those of Earth.

    The astronauts of Apollo lifted off on a series of missions to get a close up look at the moon and perhaps settle the debate. Because there's no atmosphere there, the astronauts entered landscapes that are nearly frozen in time. They could scour the lunar surface for evidence of events going back almost to the time of its birth.

    Indeed, eons of impacts had opened up the Moon's interior, leaving a wealth of information strewn about their landing sites. Scientists had already noticed that some large old craters were surrounded by concentric rings. You can see one of the most pronounced examples in this image of the Mare Orientale, captured recently by NASA's Lunar Reconnaissance Orbiter, or LRO. The colors show differences in elevation.

    The old view was that the impact had melted the rock below. A newer view held that the impactor had actually splashed down on a molten surface. That gave rise to the radical notion that, early in its history, the moon's surface was covered in a vast ocean of magma.

    When the astronauts arrived, they found relatively light rocks known as anorthosites. Their presence suggested that heavier material had sunk toward the moon's interior, forcing lighter material to the surface.

    The rocks they brought back were found to be strikingly similar to those on Earth, in part because they share forms of oxygen, called isotopes, that scientists regard as blood types for solar system bodies. Then there was this. The moon appeared to be completely, utterly, dry, with no evidence that water was ever present on its surface.

  • दुनिया का इतिहास जानिये सिर्फ २ घंटे में , आपने कभी ऐसा देखा भी नहीं होगा | World History

    1:25:37

    दुनिया का इतिहास जानिये सिर्फ २ घंटे में , आपने कभी ऐसा देखा भी नहीं होगा | World History


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  • Catastrophe - Episode 2 - Snowball Earth

    48:03

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    Every other Wednesday we present a new video, so join us to see the truth laid bare...

    This spectacular five-part documentary series, presented by Tony Robinson, investigates the history of natural disasters, from the planet's beginnings to the present, putting a new perspective on our existence and suggesting that we are the product of catastrophe.

    99% of all the creatures that have ever lived, no longer exist. They were wiped-out in a series of global catastrophes. Each disaster changed the course of evolution on earth. Without them mankind, nor any of the life we see around us, would be here today. For out of catastrophe comes rebirth. Evolution is a savage, imperfect and violent process. It's survive or perish. The earth's history of catastrophes has both moulded the planet and determined evolution. For each disaster led to another leap forward on the evolutionary trail form single celled bacteria to humankind itself.

    Episode 2 - Snowball Earth

    This programme delves into a world lying beneath a frozen surface. It is the greatest climate disaster ever to have hit Earth. 650 million years ago, a cataclysmic ice age sealed the entire planet beneath ice and snow, almost destroying life and turning the world into one huge snowball.

    Snowball Earth uncovers the story behind one of the most controversial theories in science today. To investigate, the programme travels the world to follow scientists scouring southern Australia, Nevada's Death Valley and Alaskan glaciers for tantalising clues as to how our planet ran away into this doomsday scenario. The results could improve understanding of evolution and survival of life.

  • New Money: The Greatest Wealth Creation Event in History - Full Documentary

    1:12:05

    ►►To learn more about Dr. Steve Sjuggerud’s favorite China investment recommendations right now, go here to get his free investment report

    Why is one misunderstood nation now the source of more millionaires and billionaires than anywhere else on earth? And why does America’s mainstream press ignore this story? Join entrepreneur and legendary investor Steve Sjuggerud, as he explores this mysterious place, and explains how it now offers what he calls: “The Greatest Moneymaking Opportunity of Our Lifetimes.”

  • Naked Science - Comets

    45:34

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    Harbingers of doom or givers of life?

    Comets, distant travellers from the outer reaches of our solar system, have captured the imagination of man and have long been shrouded in mystery. Now through Earth based observations and an increasing number of space probes, their origins and nature are becoming unveiled. Naked Science explores behind the legend to reveal what a comet actually is, what secrets they hold for our understanding of how the solar system was formed; shed light on the theory that they brought the building blocks of life to earth and their potential for wiping out life as we know it.

  • PLANET JUST LIKE EARTH: Alien Life - National Geographic Documentary HD

    50:42

    When NASA began 60 years ago, we had questions about the universe humans had been asking since we first looked up into the night sky. In the six decades since, NASA, along with its international partners and thousands of researchers, have expanded our knowledge of the Universe by using a full fleet of telescopes and satellites. From the early probes of the 1950s and 1960s to the great telescopes of the 1990s and 21st century, NASA scientists have been exploring the evolution of the universe from the Big Bang to the present.

    The Great Observatories
    NASA astronomers use several kinds of telescopes in space and on the ground. Each observes targets like stars, planets, and galaxies, but captures different wavelengths of light using various techniques to add to our understanding of these cosmic phenomenon.
    Dark Matter
    NASA telescopes have helped us better understand this mysterious, invisible matter that is five times the mass of regular matter. The first direct detection of dark matter was made in 2007 through observations of the Bullet Cluster of galaxies by the Chandra x-ray telescope.

    Black Holes
    Although we can’t “see” black holes, scientists have been able to study them by observing how they interact with the environment around them with telescopes like Swift, Chandra, and Hubble. In 2017, NASA's Swift telescope has mapped the death spiral of a star as it is consumed by a black hole. This year, astronomers using Chandra have discovered evidence for thousands of black holes located near the center of our Milky Way galaxy.
    Galaxies
    A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, held together by gravity. Some are spiral-shaped like our Milky Way Galaxy; others are smooth and oval shaped. NASA telescopes are helping us learn about how galaxies formed and evolved over time.
    Exoplanets
    Just 30 years ago, scientists didn’t know if there were planets orbiting other stars besides our own Sun. Now, scientists believe every star likely has at least one exoplanet. They come in a wide variety of sizes, from gas giants larger than Jupiter to small, rocky planets about as big as Earth or Mars. They can be hot enough to boil metal or locked in deep freeze. They can orbit their stars so tightly that a “year” lasts only a few days; they can even orbit two stars at once. Some exoplanets don’t orbit around a star, but wander through the galaxy in permanent darkness. NASA’s Kepler spacecraft and newly-launched Transiting Exoplanet Survey Satellite are helping us find more distant worlds
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  • On Saturn, It Literally Rains Diamonds | The Planets | BBC Earth

    2:38

    On Saturn it occasionally rains diamonds. Narrated by Brian Cox.
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    Watch more:
    Planet Earth
    Blue Planet
    Planet Earth II
    Planet Dinosaur

    The Planets
    This stunningly ambitious series brings to life the most memorable events in the history of the solar system, by using groundbreaking visual effects to tell the thrilling story of all eight planets. Transporting you to the surface of these dynamic worlds to witness the moments of high drama that shaped each one, The Planets reveals how the latest science allows us to unlock their past lives. It pieces together clues of magnificent lost waterfalls on Mars, the mass planetary migrations as they jostled for position early in their history, and even the distant fate of Saturn as one of its moons awakens to form a beautiful water world. Also available: The Planets: Behind the Science

    Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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    This is a commercial channel from BBC Studios. Service & Feedback

  • A True Story About Planet Pluto: | Passport to Pluto and Beyond

    45:32

    Feel free to subscribe our Documentary HD Channel in HD ( )
    A True Story About Planet Pluto

    Pluto (minor-planet designation 134340 Pluto) is the largest object in the Kuiper belt, and the tenth-most-massive body observed directly orbiting the Sun. It is the second-most-massive known dwarf planet, after Eris. Like other Kuiper-belt objects, Pluto is composed primarily of rock and ice and is relatively small, approximately one-sixth the mass of the Moon and one-third its volume. It has an eccentric and highly inclined orbit that takes it from 30 to 49 AU (4.4--7.4 billion km) from the Sun. This causes Pluto to periodically come closer to the Sun than Neptune, but an orbital resonance with Neptune prevents the bodies from colliding. In 2014 it was 32.6 AU from the Sun.

    Discovered in 1930, Pluto was originally classified as the ninth planet from the Sun. Its status as a major planet fell into question following further study of it and the outer Solar System over the ensuing 75 years. Starting in 1977 with the discovery of the minor planet 2060 Chiron, numerous icy objects similar to Pluto with eccentric orbits were found. The most notable of these was the scattered disc object Eris, discovered in 2005, which is 27% more massive than Pluto. The understanding that Pluto is only one of several large icy bodies in the outer Solar System prompted the International Astronomical Union (IAU) to define formally in 2006 what it means to be a planet. This definition excluded Pluto and reclassified it as a member of the new dwarf planet category (and specifically as a plutoid). A few astronomers hold that Pluto should have remained classified as a planet, and that other dwarf planets and even moons should be added to the roster of planets along with Pluto.

    Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto), Nix, Hydra, Kerberos, and Styx. Pluto and Charon are sometimes described as a binary system because the barycenter of their orbits does not lie within either body. The IAU has yet to formalise a definition for binary dwarf planets, and Charon is officially classified as a moon of Pluto.

    On July 14, 2015, the Pluto system is due to be visited by spacecraft for the first time. The New Horizons probe will perform a flyby during which it will attempt to take detailed measurements and images of the Plutoid and its moons.

  • Our Planet | High Seas | FULL EPISODE | Netflix

    48:32

    Experience our planet's natural beauty and examine how climate change impacts all living creatures in this ambitious documentary of spectacular scope.

    In this episode: Venture into the deep, dark and desolate oceans that are home to an abundance of beautiful -- and downright strange -- creatures.

    For more about the High Seas please visit

    Download free educational resources at

    US Rating: TV-PG. Parental guidance suggested.

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    About Netflix:
    Netflix is the world's leading streaming entertainment service with over 167 million paid memberships in over 190 countries enjoying TV series, documentaries and feature films across a wide variety of genres and languages. Members can watch as much as they want, anytime, anywhere, on any internet-connected screen. Members can play, pause and resume watching, all without commercials or commitments.

    Our Planet | High Seas | FULL EPISODE | Netflix

  • 240 million years ago to 250 million years in the future

    12:25

    This animation shows the plate tectonic evolution of the Earth from the time of Pangea, 240 million years ago, to the formation of Pangea Proxima, 250 million years in the future.

    The animation starts with the modern world then winds it way back to 240 million years ago (Triassic). The animation then reverses direction, allowing us to see how Pangea rifted apart to form the modern continents and ocean basins. When the animation arrives back at the present-day, it continues for another 250 million years until the formation of the next Pangea, Pangea Proxima.

    This question often come up. Why dont you show East Africa rifting away from the rest of Africa?.

    Here's why:

    - Often, oceans open around a three-armed rift system called a “triple junction”. Only two arms of a triple junction open to form ocean basins. . In the case of East Africa, the Red Sea and Gulf of Aden are the two successful rifts. The East African rift sytem, starting at the Afar Triangle, in Ethiopiais an aulacogen or “failed arm” of a triple junction The East African rift system is a failed rift, much like the Benue Trough in the South Atlantic or the Labrador Sea in the North Atlantic.
    - Let’s step back and ask the question, “What caused the rifting of the Red Sea , Gulf of Aden and East Africa in the first place? Though the Afar hotspot certainly helped to weaken the lithosphere, The driving force that caused the rifting was the subduction (beneath Eurasia , i.e., Iran) of oceanic crust attached to the northern margin of Arabia. (There was ocean an ocean between Arabian and Iran.) This subducting slab “pulled” Arabia northward tearing it away from Africa. This subduction zone has been completely destroyed by the collision of Arabia and Eurasia (Zagros Mountains). Consequently, there is no longer any “plate tectonic forces” acting on the African rifts and they will not continue to open.
    - Also, if we look at the plate tectonic neighborhood of East Africa, we see that the dominant motion of plates in the western Indian Ocean is N-S, rather than E-W . In fact, a new subduction zone is just beginning in the central Indian Ocean (a zone of diffuse earthquakes ~ 5-10 S) that will continue to pull Australia and Antarctica northward towards Asia. In other words, there is no room for East Africa to expand towards the east. Rather the east coast of Madagascar will become a strike-slip margin accommodating the continued, northward movement of the Australian-Antarctic plate.
    I hope this explanation is helpful. Of course all of this is scientific speculation, we will have to wait and see what happens, but this is my projection based on my understanding of the forces that drive plate motions and the history of past plate motions. Remember: “The past reveals patterns; Patterns inform process; Process permits prediction.”

    Notice how the areas of green (land), brown (mountains), dark blue (deep sea), and light blue (shallow seas on continents), changes throughout time. These changes are the result of mountain-building, erosion, and the rise and fall of sea level throughout time. The white patches near the pole are the expanding and contracting polar icecaps.

    The first part of the animation is a global view. The second part of the animation is a closeup view. This animation contains original music by C.R. Scotese, as well as an easter egg at the end.

    This animation may be freely used in museum exhibits, broadcast TV, and on the internet. A high resolution version of this animation is available upon request (cscotese@gmail.com).

    Credit Line: Scotese, C.R., 2004. Plate Tectonics and Paleogeography (animation), PALEOMAP Project, University of Texas at Arlington, Arlington, Texas (12:24).

    Publications of C.R. Scotese can be freely downloaded at or

  • Are We Alone - Full Length Documentary

    50:50

    This is one question that has haunted mankind for long. Man cannot rest until he finds out if there is another living and breathing planet in space.

    Subscribe to Viewster on YouTube! ►

    This undying search has led to the various space missions including the Viking Mission to Mars and the findings of the Jupiter’s satellites. Starting with the new wing of science, Astrobiology, that deals with the study of a possible life form based on the research and analysis of life forms on Earth, man hopes to find the answer after all.

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  • The History of Earth - How Our Planet Formed - Full Documentary HD

    3:18

    What is Earth

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  • The History of Earth - How Our Planet Formed - Full Documentary HD

    1:37

    In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth began to cool, forming a thin crust on its surface. As the cooling continued, water vapor began to escape and condense in the earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.

    It is theorized that the true age of the earth is about 4.6 billion years old, formed at about the same time as the rest of our solar system. The oldest rocks geologists have been able to find are 3.9 billion years old. Using radiometric dating methods to determine the age of rocks means scientists have to rely on when the rock was initially formed (as in - when its internal minerals first cooled). In the infancy of our home planet the entire earth was molten rock - a magma ocean.

    Since we can only measure as far back in time as we had solid rock on this planet, we are limited in how we can measure the real age of the earth. Due to the forces of plate tectonics, our planet is also a very dynamic one; new mountains forming, old ones wearing down, volcanoes melting and reshaping new crust. The continual changing and reshaping of the earth's surface that involves the melting down and reconstructing of old rock has pretty much eliminated most of the original rocks that came with earth when it was newly formed. So the age is a theoretical age.

  • The History of Earth - How Our Planet Formed - Full Documentary HD

    3:23

    How Much Longer Can Earth Support Life?
    Published on 15 Jun 2018

    In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth began to cool, forming a thin crust on its surface. As the cooling continued, water vapor began to escape and condense in the earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.

    It is theorized that the true age of the earth is about 4.6 billion years old, formed at about the same time as the rest of our solar system. The oldest rocks geologists have been able to find are 3.9 billion years old. Using radiometric dating methods to determine the age of rocks means scientists have to rely on when the rock was initially formed (as in - when its internal minerals first cooled). In the infancy of our home planet the entire earth was molten rock - a magma ocean.

    Since we can only measure as far back in time as we had solid rock on this planet, we are limited in how we can measure the real age of the earth. Due to the forces of plate tectonics, our planet is also a very dynamic one; new mountains forming, old ones wearing down, volcanoes melting and reshaping new crust. The continual changing and reshaping of the earth's surface that involves the melting down and reconstructing of old rock has pretty much eliminated most of the original rocks that came with earth when it was newly formed. So the age is a theoretical age.

    When Did Life on Earth Begin?

    Scientists are still trying to unravel one of the greatest mysteries of earth: When did life first appear and how did it happen? It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. That's pretty much all there was for about the next two billion years. Then suddenly those single celled organisms began to evolve into multicellular organisms. Then an unprecedented profusion of life in incredibly complex forms began to fill the oceans. Some crawled from the seas and took residence on land, perhaps to escape predators in the ocean. A cascading chain of new and increasingly differentiated forms of life appeared all over the planet, only to be virtually annihilated by an unexplained mass extinction. It would be the first of several mass extinctions in Earth's history.

    Scientists have been looking increasingly to space to explain these mass extinctions that have been happening almost like clockwork since the beginning of living time. Perhaps we've been getting periodically belted by more space rocks (ie. asteroids), or the collision of neutron stars happening too close for comfort? Each time a mass extinction occurred, life found a way to come back from the brink. Life has tenaciously clung to this small blue planet for the last three billion years. Scientists are finding new cues as to how life first began on earth in some really interesting places - the deep ocean.

  • The History of Earth -How Our Planet Formed - Full Documentary HD

    5:03

    #Maharbrothers
    In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth began to cool, forming a thin crust on its surface. As the cooling continued, water vapor began to escape and condense in the earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.

    It is theorized that the true age of the earth is about 4.6 billion years old, formed at about the same time as the rest of our solar system. The oldest rocks geologists have been able to find are 3.9 billion years old. Using radiometric dating methods to determine the age of rocks means scientists have to rely on when the rock was initially formed (as in - when its internal minerals first cooled). In the infancy of our home planet the entire earth was molten rock - a magma ocean.

    Since we can only measure as far back in time as we had solid rock on this planet, we are limited in how we can measure the real age of the earth. Due to the forces of plate tectonics, our planet is also a very dynamic one; new mountains forming, old ones wearing down, volcanoes melting and reshaping new crust. The continual changing and reshaping of the earth's surface that involves the melting down and reconstructing of old rock has pretty much eliminated most of the original rocks that came with earth when it was newly formed. So the age is a theoretical age.

    When Did Life on Earth Begin?

    Scientists are still trying to unravel one of the greatest mysteries of earth: When did life first appear and how did it happen? It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. That's pretty much all there was for about the next two billion years. Then suddenly those single celled organisms began to evolve into multicellular organisms. Then an unprecedented profusion of life in incredibly complex forms began to fill the oceans. Some crawled from the seas and took residence on land, perhaps to escape predators in the ocean. A cascading chain of new and increasingly differentiated forms of life appeared all over the planet, only to be virtually annihilated by an unexplained mass extinction. It would be the first of several mass extinctions in Earth's history.

    Scientists have been looking increasingly to space to explain these mass extinctions that have been happening almost like clockwork since the beginning of living time. Perhaps we've been getting periodically belted by more space rocks (ie. asteroids), or the collision of neutron stars happening too close for comfort? Each time a mass extinction occurred, life found a way to come back from the brink. Life has tenaciously clung to this small blue planet for the last three billion years. Scientists are finding new cues as to how life first began on earth in some really interesting places - the deep ocean.

  • The History Of Earth - How Our Planet Formed - Full Documentary HD

    1:02

    Earth was a fireball then it turned into a terra planet.

  • An Introduction to the Earth,Our Earth,पृथ्वी||Earth Documentary||Amazing facts about Earth.

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    9. Hindi motivational song


    An Introduction to the Earth,Our Earth,पृथ्वी,
    The History of Earth - How Our Planet Formed - Full Documentary HD,How Was the Earth Formed? How Life Started on Earth | History of Earth.

  • पृथ्वी के बारे में हैरान करने वाले तथ्य | Top 10 amazing facts about Earth

    10:37

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  • Solar System History - How Was the Earth Formed - Full Documentary National Geographic HD

    1:14:26

    At 4.6 billion years old, the Solar System is our solid, secure home in the Universe. But how did it come to be? In this episode we trace the system's birth from a . kids documentary animals,.

    Solar System History - How Was the Earth Formed - Full Documentary National Geographic HD + More: - Solar System History - How Was the Earth.

    The Earth might seem solid beneath our feet but five billion years ago there was no sign of the planet we call home. Instead there was only a new star and a cloud of dust in our solar system.

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    In beautiful 4K resolution, the story of how our Earth was formed four and a half billion years ago told from the perspective of an asteroid called Benn

  • The beginning of life

    3:23

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    Hello friends this is my first video about space. If you want any video about space you can comment. I'll try to make.
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  • How the Earth Formed

    51:08

  • The History of water Earth - How Our Planet Formed - Full Documentary | video by Kaaf TV

    8:15

    The History of water Earth - How Our Planet Formed - Full Documentary | video by Kaaf TV


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    In the very beginning of earth's history, this planet was a giant, red hot, roiling, boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth began to cool, forming a thin crust on its surface. As the cooling continued, water vapor began to escape and condense in the earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.

    It is theorized that the true age of the earth is about 4.6 billion years old, formed at about the same time as the rest of our solar system. The oldest rocks geologists have been able to find are 3.9 billion years old. Using radiometric dating methods to determine the age of rocks means scientists have to rely on when the rock was initially formed (as in - when its internal minerals first cooled). In the infancy of our home planet the entire earth was molten rock - a magma ocean.

    Since we can only measure as far back in time as we had solid rock on this planet, we are limited in how we can measure the real age of the earth. Due to the forces of plate tectonics, our planet is also a very dynamic one; new mountains forming, old ones wearing down, volcanoes melting and reshaping new crust. The continual changing and reshaping of the earth's surface that involves the melting down and reconstructing of old rock has pretty much eliminated most of the original rocks that came with earth when it was newly formed. So the age is a theoretical age.

    When Did Life on Earth Begin?

    Scientists are still trying to unravel one of the greatest mysteries of earth: When did life first appear and how did it happen? It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. That's pretty much all there was for about the next two billion years. Then suddenly those single celled organisms began to evolve into multicellular organisms. Then an unprecedented profusion of life in incredibly complex forms began to fill the oceans. Some crawled from the seas and took residence on land, perhaps to escape predators in the ocean. A cascading chain of new and increasingly differentiated forms of life appeared all over the planet, only to be virtually annihilated by an unexplained mass extinction. It would be the first of several mass extinctions in Earth's history.

    Scientists have been looking increasingly to space to explain these mass extinctions that have been happening almost like clockwork since the beginning of living time. Perhaps we've been getting periodically belted by more space rocks (ie. asteroids), or the collision of neutron stars happening too close for comfort? Each time a mass extinction occurred, life found a way to come back from the brink. Life has tenaciously clung to this small blue planet for the last three billion years. Scientists are finding new cues as to how life first began on earth in some really interesting places - the deep ocean

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  • The Formation of the Earth

    4:19

    You Learn is a platform that presents you the detailed videos of different aspects of world and universe so that you never stop learning.
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