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Properties of black holes
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Recommended: Properties of black holes
If you’ve been on this Earth long enough you probably know,or you’ve heard of a black hole.Those big,scary things in space that suck everything into them and whatever goes in,never comes out.While this assumption is,in a way right,that isn’t all that a black hole really is.That leads yourself to ask the question: What is a black hole? Firstly,everyone knows that black holes are formed when a star dies and collapses in on itself,if you compress an object into a small enough space to the point where it’s density and gravitational pull would be so great that not even light can pass through it,you would have a black hole (hence the ‘black’).There are two types of black holes: a Schwarzschild and a Kerr.The difference between a Schwarzschild and a Kerr is a Schwarzschild black hole doesn’t rotate,a Kerr black hole does rotate.There are four parts of a black hole,the singularity (the core),the event horizon (the opening of the hole),then the ergosphere is the egg-shaped region of distorted space around the event horizon (since the gravitational pulls bend space and time,the ergosph...
Starting with black holes, Khalili describes the creation of one. I found that a black hole is what remains when a massive star dies. Because stars are so massive and made out of gas, there is an intense gravitational field that is always trying to collapse the star. As the star dies, the nuclear fusion reactions stop because the fuel for these reactions gets burned up. At the same time, the star's gravity pulls material inward and compresses the core. As the core compresses, it heats up and eventually creates a supernova explosion in which the material and radiation blasts out into space. What remains is the highly compressed and extremely massive core. The core's gravity is so strong that even light cannot escape. This object is now a black hole and literally cannot be seen because of the absence of light. Because the core's gravity is so strong, the core sinks through the fabric of space-time, creating a hole in space-time. The core becomes the central part of the black hole called the singularity. The opening of the hole is called the event horizon. Khalili describes that there are two different kinds of black holes:
To first understand a black hole, you must understand how it is created. Most black holes are produced by dying stars that have a mass twenty times greater than our sun. A star eventually becomes a black hole because the energy and pressure pushing outward is overcome by gravity that pushes inward. For big stars the gravity force causes a star to collapse under its own weight. The star then will explode as a supernova and some outer parts of the star are sent out into space. The core is still intact, and if it has collapsed under its own weight, it will have formed a star. This core is said to have nearly zero volume, but with infinite density, known as a singularity.
In the article The Cosmic Perspective by Neil deGrasse Tyson he examines a range of topics from human life coming from Mars to how our perspective of the universe relates to religion. In the year 2000, a new space show opened at the Hayden Planetarium called Passport to the Universe, which compared the size of people Milky Way and beyond. While a show like this might make someone feel minuscule and insignificant, Tyson says that seeing the size of the universe actually makes him feel more alive not less and gives him a sense of grandeur. I agree with his idea that looking at us as a people in comparison can actually give you a sense of grandeur. However, when I compare myself to the vastness of space, it puts events on Earth in perspective while showing how influential we can be as a people even if we are small.
Death by Black Hole: And Other Cosmic Quandaries explains about his ability to blend content, accessibility, and humor, Tyson is a natural teacher who simplifies some of the most complex concepts in astrophysics
Black Star, composed of MC’s Mos Def and Talib Kweli, are joined by fellow rapper Common in their 1998 song “Respiration” to expose the decaying urban and societal conditions in their respective cities of Brooklyn and Chicago. Each artist paints a brilliant picture of their surroundings and deals with various issues which plague their communities. Mos Def’s verse is particularly well-written; in it he highlights the growing economic inequality, daily struggles of the inner city poor, and the overriding nature of the his city.
It is believed that super massive black holes exist in the cores of many large galaxies, including the Milky Way galaxy, which is our galaxy. (Swinburne University 2014). It is believed that a normal black holes were formed because of a supernova explosion of a gigantic star, meaning when huge stars collapse, so the larger the star, the larger the black hole. ( Millis 2014) . So therefore a simple idea of how a super massive black hole might have been formed would be because of a collision of super enormous star or a collision of star clusters (star clouds). (Super massive black holes 2014)
...f gas, which collapsed and broke up into individual stars. The stars are packed together most tightly in the center, or nucleus. Scientists believe it is possible that at the very center there was too much matter to form an ordinary star, or that the stars which did form were so close to each other that they coalesced to form a black hole. It is argued that really massive black holes, equivalent to a hundred million stars like the Sun, could exist at the center of some galaxies
A Black Hole is defined as an object in space that is so compact, that has a gravitational pull so powerful, not even light can escape its pull. In most cases Black Holes are formed when a massive star (much larger than our own) undergoes a supernova explosion. When this happens, the star may collapse on its own gravitational pull, thus resulting in a an object with infinitely large density and zero volume. As a result, the escape velocity (the speed required to escape the gravitational pull) becomes even greater than the speed of light, and because nothing can travel faster than the speed of light, nothing can escape a black hole.
The novel Beyond the Blue Event Horizon is the sequel to Frederik Pohl’s Nebula Award winning novel, Gateway. Without prior knowledge of the first book’s plot, the sequel is extremely hard to read and get into. The story starts on a ship somewhere in space with a mysterious boy named Wan. On a different ship, the Herter-Halls company is making a journey to the Food Factory since there was a shortage on Earth. As the book progresses, the two ships meet up, and they meet an alien race. The aliens imprison the Herter-Halls company. The book’s characters, plot, and setting help make this book interesting and directional.
Black holes - the strange scientific phenomenon that has astounded physicists and astronomers alike for decades. Popular subjects in science fiction novels, black holes are one of the greatest enigmas of the scientific world. Even today, the concept of a super-dense ball of matter that not even light can escape from is somewhat farfetched, and many scientists disagree with each other about nearly every aspect of a black hole. This project will attempt to shed some light on these mysterious formations, and will inform you the reader of the most popular and widely accepted theories surrounding them.
Before I begin to speak about black holes, I will have to explain what the white glowing specks in the sky are. Without a star a black hole could not be formed. In the beginning of a star life a hydrogen is a major part of its development. Stars form from the condensation of clouds of gas that contain hydrogen. Then atoms of the cloud are pulled together by gravity. The energy produced from the cloud is so great when it first collides, that a nuclear reaction occurs. The gasses within the star starts to burn continuously. The hydrogen gas is usually the first type of gas consumed in a star and then other gas elements such as carbon, oxygen, and helium are consumed. This chain reaction of explosions fuels the star for millions or billions of years depending on the amount of gases there are.
Like the boundaries on earth, mankind has always looked to the sky in awe for it seemed boundless in its ever growing horizon. Out of all the cosmos that’s being found and discovered every day, there is one object that stands to elude scientists still, the black hole. Albert Einstein, and all the brilliant scientists after his, help to design and create a part of the universe that’s very crucial to understanding existence. The perimeters of a black hole have been a great this that has been discussed and observed to the point where it eventually becomes clear as its compared to objects around or like it. The physics of the black holes existence is still unclear for it shows properties that support Einstein’s theory and quantum mechanics, but at the same time breaks them both.
Black holes were originally thought to have only mere mathematical concepts. There was seemingly no possible way to compress any object into a space small enough to equal to its schwarzschild radius. Later however, astronomer Subrahmanyan Chandrasekhar calculated that stars much larger than our own sun should theoretically be able to collapse into a black hole (UTFC). A star is like a blown up balloon with the force of gravity trying to compress the balloon inwards and the air trying to push the balloon outwards. Likewise, stars are held in balance by gravity trying to collapse the star inwards going against the outwards pressure of the internal reactions of the star called nuclear fusion. If the star is big enough and the pressure inside quickly disappears, gravity would and should slingshot the star into a tiny point with near infinite density with an extremely strong gravitatio...
Einstein himself, working at Princeton with Nathan Rosen had discovered that the equations of relativity actually represent a black hole as a bridge between two regions of flat space-time, a phenomenon known as the “Einstein-Rosen Bridge”. Later on, in 1963, the New Zealand mathematician Roy Kerr found that if a black hole is rotating, a singularity still forms, but in the form of a ring, not a point. It was believed that in principle, a particle may be able to fall towards the singularity, but if at some point moved through the hole instead of the ring, the particle may not be lost forever. Therefore, with these theories in mind, a particle falling into a black hole will fall through the ring that the singularity has become, then going through the Einstein-Rosen Bridge, eventually being spewed out of the white hole into another space-time continuum.
Black holes are the result of the death of a massive star, leaving behind a dense remnant core that eventually collapses to create a gravitational force so strong that nothing, including light, can escape the force. The theory that black holes existed started back in the early 1900s and since then astronomers and scientists have been trying to get a better understanding of them. This phenomenon has been a working progress for astronomers and scientists for many years and as we develop a better understanding of our solar system, the more likely it is to make a significant discovery that can answer some of the most difficult questions about our incredible galaxy and solar system. The more information we are able to acquire about our universe, the more questions we might be able to answer about our existence. With advancements in technology we may be able to see some significant discoveries and insights into the world of black holes.