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Monster Black Holes - National Geographic

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BLACK HOLES - Full Documentary - Penetrating the Mystery of Singularities

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.

How Big Are Black Holes?

Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or stuff, in an object.

Another kind of black hole is called stellar. Its mass can be up to 20 times more than the mass of the sun. There may be many, many stellar mass black holes in Earth's galaxy. Earth's galaxy is called the Milky Way.

The largest black holes are called supermassive. These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.


How Do Black Holes Form?
Scientists think the smallest black holes formed when the universe began.

Stellar black holes are made when the center of a very big star falls in upon itself, or collapses. When this happens, it causes a supernova. A supernova is an exploding star that blasts part of the star into space.

Scientists think supermassive black holes were made at the same time as the galaxy they are in.


If Black Holes Are Black, How Do Scientists Know They Are There?
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting, a black hole.

When a black hole and a star are close together, high-energy light is made. This kind of light can not be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.


Could a Black Hole Destroy Earth?
Black holes do not go around in space eating stars, moons and planets. Earth will not fall into a black hole because no black hole is close enough to the solar system for Earth to do that.

Even if a black hole the same mass as the sun were to take the place of the sun, Earth still would not fall in. The black hole would have the same gravity as the sun. Earth and the other planets would orbit the black hole as they orbit the sun now.

The sun will never turn into a black hole. The sun is not a big enough star to make a black hole.


How Is NASA Studying Black Holes?
NASA is using satellites and telescopes that are traveling in space to learn more about black holes. These spacecraft help scientists answer questions about the universe.
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A Very Dangerous Universe | National Geographic

Scientists describe a primordial black hole, an object the size of an atom that can destroy the earth. .
How To Survive the End of the World examines terrifying and scientifically plausible doomsday scenarios by exploring six distinct, world-threatening events—flooding, freezing, continent-wide storm systems, a global volcanic cataclysm, a killer pandemic, and nano-technology run amok—and the methods by which humanity would fight to survive against grim odds.
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Secret Monster Black Holes and Time National Geographic Channel Space Universe Documentary

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What is a black hole? A region in house is what's fashioned once an outsized star collapses. one in every of the most characteristics of a region is that the .
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Deep Sea Creatures [National Geographic Documentary 2017 HD]

Deep Sea Creatures [National Geographic Documentary 2017 HD]

The Deep sea creature refers to organisms that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such as hundreds of bars of pressure, small amounts of oxygen, very little food, no sunlight, and constant, extreme cold. Most creatures have to depend on food floating down from above.
These creatures live in very demanding environments, such as the abyssal or hadal zones, which, being thousands of meters below the surface, are almost completely devoid of light. The water is between 3 and 10 degrees Celsius and has low oxygen levels. Due to the depth, the pressure is between 20 and 1,000 bars. Creatures that live hundreds or even thousands of meters deep in the ocean have adapted to the high pressure, lack of light, and other factors.

The depths of the ocean are festooned with the most nightmarish creatures imaginable. You might think you’re safe, because these critters live thousands of feet down in a cold dark abyss, but the vampire squid, which looks like a nightmare umbrella, and the frilled shark—a literal living fossil—will live on in the recesses of your mind long after you’ve clicked away. Enjoy these deep sea horrors and try to have a relaxing day afterward.

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NG: Гигантская черная дыра / Monster Black Hole (2008)

National Geographic: Гигантская черная дыра / Monster Black Hole (2008). HD
Режиссер: Томас Лукас
Производство: National Geographic (США)
Жанр: Документальный, науч/поп
Перевод: Профессиональный (многоголосый, закадровый)
Описание: Черные дыры во Вселенной - центры мощнейшей гравитации, поглощающие все на своем пути. Что мы увидим, если приблизимся к ним, пройдем точку невозврата и попадем в область искривления пространства и времени? Какие тайны и секреты Вселенной мы откроем, если отправимся к центру гигантской черной дыры?

New BBC Documentary Full HD Monster Black Holes National Geographic

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Andrea Ghez’s Black Hole Research Confirms Einstein’s Theory of Relativity | Short Film Showcase

For the past 23 years Andrea Ghez, professor of physics and astronomy at UCLA, has been collecting data on stars that orbit black holes. She found that their motion provided an opportunity to test the fundamental laws of physics. “We asked how gravity behaves near a supermassive black hole and whether Einstein’s theory is telling us the full story. ”Einstein’s 1915 theory of general relativity holds that what we perceive as the force of gravity arises from the curvature of space and time. “In Newton’s version of gravity, space and time are separate, and do not co-mingle; under Einstein, they get completely co-mingled near a black hole,” she said. Ghez's research is the most detailed study ever conducted into the supermassive black hole and Einstein’s theory of general relativity.
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The Short Film Showcase spotlights exceptional short videos created by filmmakers from around the web and selected by National Geographic editors. We look for work that affirms National Geographic's belief in the power of science, exploration, and storytelling to change the world. The filmmakers created the content presented, and the opinions expressed are their own, not those of National Geographic Partners.

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Andrea Ghez’s Black Hole Research Confirms Einstein’s Theory of Relativity | Short Film Showcase


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How The Universe Works Monster Black Hole | Hindi | 720p

How The Universe Works Monster Black Hole | Hindi | 720p Watch Online Discovery Science Shows In Hindi

Supermassive Black Holes: Most Powerful Objects in the Universe - Discovery Space Documentary

The most massive black hole ever observed has been discovered in a galaxy some 700 million light-years from Earth. ...
The galaxy in question, called Holm 15A, is the brightest member of a cluster of galaxies called Abell 85 that sit in the constellation Cetus, visible from both the Northern and Southern Hemispheres.
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National Geographic 2014 Monster Black Holes Full Documentary HD

National Geographic 2014 Monster Black Holes Full Documentary HD

Black Holes

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Somewhere in our galaxy, at some time in the future, a spacecraft from Earth will encounter the most dangerous object in the Universe. A stunning visual journey into black holes, their structure and their creation.

A black hole is a geometrically defined region of spacetime exhibiting such strong gravitational effects that nothing, including particles and electromagnetic radiation such as light, can escape from inside it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

National Geographic: The Largest Black Hole In the Universe 'Documentary HD'

Astronomers have discovered the largest and most luminous black hole ever seen — an ancient monster with a mass about 12 billion times that of the sun — that dates back to when the universe was less than 1 billion years old.

It remains a mystery how black holes could have grown so huge in such a relatively brief time after the dawn of the universe, researchers say.

Supermassive black holes are thought to lurk in the hearts of most, if not all, large galaxies. The largest black holes found so far in the nearby universe have masses more than 10 billion times that of the sun. In comparison, the black hole at the center of the Milky Way is thought to have a mass only 4 million to 5 million times that of the sun.

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Monster BLACK HOLE | Full Documentary

Monster Black Hole traces the life cycle of a black hole, from its violent beginnings in the early universe, to its growth to supermassive proportions at the center of a galaxy, and its death in deep time.

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Monster Black Holes - National Geographic

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New BBC Documentary Full HD - Monster Black Holes National Geographic

National Geographic Documentary | Black Holes & Monsters of Universe | Science Documentary Full HD Black holes of stellar .

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Somewhere, not farm from Earth, a star dies. It explodes in a violent supernova and leaves behind the strangest phenomenta in the Cosmos - a black hole.

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Black Holes | National Geographic

Stephen Hawking's theory of black holes and Richard Gott's theory of cosmic strings give hope to those seeking a route to time travel.
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Black Holes | National Geographic


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Black Holes National Geographic Documentary HD

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Black Holes 101 | National Geographic

At the center of our galaxy, a supermassive black hole churns. Learn about the types of black holes, how they form, and how scientists discovered these invisible, yet extraordinary objects in our universe.
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Monster Black Holes - National Geographic

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