According to the general relativity theory, a sufficiently compact mass has the capacity to deform spacetime thereby forming what is commonly known as a black hole, a point around which the gravitational force is too strong. Imagine a giant building, a skyscraper for example, being compacted and compressed to the size of a Rubik’s cube. This happens to the massive dying star at the end of its life. For nearly 200 years now, theorists have postulated the existence of black holes and now there is strong evidence to support that most, if not all galaxies have black holes that are essentially millions or even billions of times heavier than the sun (Volonteri, 2010). Coined in 1967 by the American Physicist John Arichbald Wheeler, the term “black hole” refers to a region of space-time from which the gravitational pull is so strong that it does not allow anything, including light, to escape (Begelman, 2003), which implies that black holes cannot be observed. In lay mans term, light cannot escape due to the fact that black hole it is travelling at the speed of light. It is as if two baseballs were thrown side by side but the observer at ball level can only see one baseball. We will explore the concept of black holes, that is, all that is currently known about this phenomenon, how they are formed, and what can be learnt from them; similarly, this essay will also highlight how black holes are detected and how they are made. The appearance of an event horizon, the boundary in space-time through which matter and light are attracted inwards towards the mass of the black hole becoming trapped permanently, is the most distinguishable feature of a black hole. As noted earlier, not even light can escape from a black hole since anything that dr... ... middle of paper ... ...the remnants of massive stars that eventually exhausted their fuel, in addition to super massive black holes at their centres. The gravitational pull around black holes is so strong that virtually nothing that enters them, including light, barely escapes and all black holes have no hair since regardless of their mass, they all can be characterized by their mass, angular momentum, as well as charge. It is difficult to study black holes because they cannot be seen but despite their invisibility, astronomers can infer the presence of black holes through their interaction with other matter as well as with electromagnetic radiation such as light; this has led to the discovery of two types of black holes, the stellar-mass black hole, which is believed to be only a few times heavier than the sun, and the super massive black hole that is about as heavy as a small galaxy.
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
The whole idea of time and black holes has been questioning scientist and many common people for decades. Whether or not the theories provided make it physically possible to allow us to ever use any type of a black hole to an advantage? Technology over these past years has allowed us to learn more and more about what black holes are and what they can do. While also allowing ourselves to discover new possibilities that they might bring forth to greater innovations in our near future. But we can only imagine, through our knowledge and technology, what a black hole could do for us, due to all the dangers they bring forth.
The origins of the super-massive black holes which concludes how they were formed and what caused them to form is an unsolved problem which is yet a mystery of astrophysics. ( Millis 2014)
Einstein’s Special Theory of Relativity has had a colossal impact on the world and is the accepted physical theory reg...
What are you going to do when you know that the person you love is dying right in front of your eyes? What is there that you can do? The Fault in Our Stars is a touching story that brings out all the possibilities of those questions. The real issue here is that is everything being done so that the person you love dies happily and peacefully? There are many instances in this story where you can tell that the main characters Hazel and Augustus really truly love each other because both make choices that will eventually end up in the others happiness. Even though there are the loving instances, there are also times where you the reader are asking yourself; ‘Is this the right thing that’s happening?’ Another factor that this book holds is that it draws you in with it’s confusion. Everything makes sense, but yet in another sense, it doesn't. This book is an emotional train wreck, and when and if you do read this I recommend you have tissues somewhere near by.
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.
...ke for instance the two images below. The first is a two-dimensional representation of the gravity of a normal star. Imagine any object floating through space as a marble. Said marble rolling along the flat surface of the space will roll into the indentation made by the sun's gravity. If you flick the marble hard enough, it can roll out of the indentation and roll away. The second pic is a representation of the gravity made by a black hole. Notice that if the marble rolls into the hole, there's no way it can get out, since there is no end to the hole.
Greene continues with his explanations of the special theory of relativity.Chapter 3: Of Warps and Ripples Green begins the chapter by describing "Newton's View of Gravity" and continues by discussing the incompatibility of Newtonian Gravity and Special Relativity. The author also talks about how Einstein discovered the link between acceleration and the warping of space and time. Greene also discuses the basic aspects of General Relativity. He later points out how the two theories of relativity effect black holes, the big bang, and the expansion of space.Chapter 4: Microscopic Weirdness This chapter describes, in detail, the workings of quantum mechanics.
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.
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.
...e times the mass of the sun. In this case gravity is overwhelmingly strong and is able to crush the neutron star towards zero mass. The result is a black hole with a gravitational field strong enough to not even let light escape (Brusca, 2004).
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.
Astronomers believe that most galaxies consist of a supermassive black hole at the center, which attracts all constituents of galaxies such as, dust, gases (mainly Hydrogen and Helium), atoms, stars, interstellar clouds and planets to the center by force of gravity, but are not sure whether all galaxies contain a black hole in the center. Galaxies keep moving in relative motion to one another and intermittently can come so close that the force of gravitational attraction between the galaxies may become strong enough to cause a change in the shape of the galaxies, while in exceptional cases, the galaxies may collide. If two galaxies collide, they may pass right through without any effect or may merge, forming strands of stars, extending beyond 100,000 light years in space (World Book Online Reference Centre, 2005). Hence, neighboring and often other colliding galaxies induce the sha...
Science fiction deals with the impact of actual and imagined science on society or individuals. It mostly speculates the technological advancement that may be obtained in the near future. Although most of the story is based on fiction, different elements of science that exist in the real world are also depicted in it. Some schools show science fiction movies to the students to enhance the learning process, while others only rely on text books. Not all classroom materials can be covered by science fiction narratives. However, making this genre a part of the education system can help students learn better and become more enthusiastic about any subject matter.