Have you ever wondered how a black hole is formed? Black holes have an interesting history. Black holes actually help us clean the universe by sucking up all the garbage in the universe.
A black hole is formed from a big sun when it collapses on itself and it becomes a black hole. An astronomer from germany by the name of Karl Schwarzchild tried to theorize how a star can shrink into something he called black hole. He guessed that our sun would have to shrink less than 2 miles its size. There are three different sizes of black holes. There are stellar the small ones, intermediate the medium ones, and super massive the big ones this depends on the mass of the black hole.
You're probably wondering how we study black holes? How nasa studies their black holes is in 2008 they launched a spacecraft satellite that studies lots of stuff in space like supermassive black holes. They can't really just go and find a black hole like that though. They have to detect x-rays, light, or another form of electromagnetic radiation
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When we say black hole it's not really true. A black hole is mostly made of light matter and not dark matter. Black holes are the most deadly thing in the universe that we know. It literally disintegrates it and takes all light away from it and never gives it back. But there is a good thing a black hole does it takes all the space garbage it's basically a space trash can.A black hole has this weird thing when you get to close to it it slows down time and if you get to close it will suck you in and you have no escape from its grasp. Black holes don't actually emit the radiation its the gas and stuff it sucks up and gets heated. This also affects the gravitational of other objects or light passing by. Black holes actually take you and stretch you out like a noodle string. How this happans by the black holes gravity takes you and strches you
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:
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.
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)
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.
Karl Schwarzschild is credited with being the brilliant astronomer who developed the concept of black holes. In 1916, using Einstein's general theory of relativity, he began to make calculations about the gravity fields of stars. He concluded that if a huge mass, such as a star, were to be concentrated down to the size of an infintessimal point, the effects of Einstein's relativity would get really fairly extreme. Schwarzschild doubted that a star could get that small, and theorized that if a star did infact shrink upon itself like that, its gravity would remain the same and the planets revolving around it would remain in the same orbits they always had. Since then however, some of Schwarzschild's theories have been disproved, but most of his initial theories hold intact today. The Schwarzschild Radius, the maximum radius a body with a specific mass can have that won't let light escape, is named in his honor, and the equation of which is still in use today: Rs=2MG/(c^2)
Although Dr. Hawking impacts many areas of science and cosmology, his work with black holes has revolutionized modern physics. He works in all areas of black holes, including how they work, singularities, and most importantly, Hawking radiation. Black holes are very simpl...
Everything we do in life has a motive. Every move, every action, we have a motive behind it all. Whether we know it or not, there is always a motive. A motive is reason for our choices and our actions. In the story Holes by Louis Sachar, a woman by the name of Ms. Katherine Barlow, she makes certain choices that impact her life, a motive was behind those choices. Now Ms. Katherine Barlow, or should I call her Kissin’ Kate Barlow made a decision to become an outlaw, after some certain let's say dark times. Now in Holes it is obvious that Katherine Barlow’s life experiences influenced her motives to become an outlaw of the wild wild west.
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.
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.
A star is an orb made up of hydrogen and helium. Stars are formed when a gravitational disturbance, such as galaxies colliding or a supernova explosion, causes molecular gas clouds to collapse. The concentration of gases generates heat and momentum from particle movement in the cloud produces a spinning effect. After approximately one hundred million years, core temperature and pressure reach levels that are sufficient to ignite nuclear fusion, which is what defines a star. A star’s properties are determined by its mass. Red dwarf stars, the least massive, use small amounts of energy over a very long period of time and scientists estimate that they can live for ten trillion years. The most massive stars, Supergiants, may live only a few million years. Most stars, including the Sun, are in the main sequence phase of their existence (Cain, 2009).
When a star "dies" it can do many different things. It can form a neutron star, expand to a red giant and shrink into a white dwarf, or sometimes collapse upon itself to form a black hole. This is mostly dependent on the density of the star. When massive stars, those twenty times the mass of our Sun or more die, they must either exhaust all of their excess mass or implode upon themselves and form black holes. Gravity overwhelms even the nuclear forces. The gravitational force becomes so strong that nothing can escape it, even photons of light, hence the name "black" hole.
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.
The first explanation does not make sense. The dust in a black body will heat up; this essentially acts like a radiation shield, exponentially damping the distant starlight. In addition, one cannot put enough dust into the universe to get rid of all the starlight, without obscuring your own sun.