Essay PreviewMore ↓
The theory that black holes have existed is not new at all. The thought of them first started in 1783 when Rev. John Michell applied Newton’s theory of gravity to predict the possibility of so-called “dark stars.” Albert Einstein’s theory of relativity predicted in 1915 “Schwartzschild singularities.” In 1967, these were renamed “black holes.”
A black hole is collapsed object (usually a star) that has become invisible and has such a powerful gravitational force that nothing, even light, can escape its surface. This is the reason that they are invisible. They are so powerful that one could easily crush an enormous amount of matter into an incredibly small space. For instance, if the earth were to be squeezed into a black hole, it would end up as the size of a marble.
A black hole forms when a super massive star has “used up” all of its nuclear fuel and then collapses under its own gravitational force. This happens because, as a star burns fuel, it creates an outward push, which counteracts the inward pull of gravity. Once the fuel is gone, the internal pressure of the star drops and it can no longer support its own weight. In a monstrous explosion, the outer layers are thrown off. And, at this same moment, the core collapses. This can happen rather quickly because gravity can crush an object 10,000 miles across to an object only 10 miles across in about one second.
During the time that a black hole is created, the star shrinks down to an infinitely small and infinitely dense point know as the singularity. At this point, all we have ever known about the universe breaks down. Around the singularity there is an imaginary circle called the event horizon. This is the black hole’s gravitational boundary where not even light can escape. Once this boundary has been crossed, there is no return. You could never actually see an object fall into a black hole. As it approaches the event horizon, time would slow down to the point in which it would take an infinite amount of time to reach it. Meanwhile, the black hole’s gravitational pull on light would give the effect that the object is fading away. If that object were a person, these are the effects that he would feel: As he fell into the black hole, he would instantly be stretched out because
How to Cite this Page
"Black Holes." 123HelpMe.com. 17 Nov 2019
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- 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.... [tags: physics space black holes]
841 words (2.4 pages)
- Introduction Black holes are one of the more interesting topics in astrophysics. Even though they are commonly accepted as being real, their actual existence has yet to have been proven2. Black holes are objects that have such a concentration of mass that nothing can escape their gravitational pull once it crosses the black hole's event horizon or Schwarzschild radius. The Schwarzschild radius is the radius where, for anything inside, the escape velocity is greater than the speed of light.... [tags: space black hole]
531 words (1.5 pages)
- 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.... [tags: physics science black hole]
717 words (2 pages)
- Stars, comets, planets, they are all visible when you look up past our atmosphere. What if I told you that there were objects up there that you could not see, but had more gravity than an object 500 time larger than our sun. Objects, that are capable of swallowing whole planets within a split second of time. An object that would steal light right out of thin-air. These objects are more powerful than anything man made. Black holes are the most popular unknown object in science. A black hole is an area of space that has so much mass crammed in it that there is no way for an object to escape its gravitational pull.... [tags: Black Hole Essays]
467 words (1.3 pages)
- The theory that black holes have existed is not new at all. The thought of them first started in 1783 when Rev. John Michell applied Newton’s theory of gravity to predict the possibility of so-called “dark stars.” Albert Einstein’s theory of relativity predicted in 1915 “Schwartzschild singularities.” In 1967, these were renamed “black holes.” A black hole is collapsed object (usually a star) that has become invisible and has such a powerful gravitational force that nothing, even light, can escape its surface.... [tags: essays research papers]
1073 words (3.1 pages)
- In 1916, the German astronomer Karl Schwarzchild attempted to theorize how a star could shrink to become what he called a "Black Hole". Schwarzchild predicted that our sun would have to shrink to less than two miles in radius. He also predicted that even though the sun had shrunk its mass and weight would remain the same, which means that the planets would continue on their orbits, uneffected. Schwarzchild still questioned if stars could become this compact. In 1934 W. Baade and F. Zwicky predicted that the collapse of a star, strips the atoms of their electrons, thus making it a Neutron Star.... [tags: science physics space]
1016 words (2.9 pages)
- Black Holes Every day we look into the night sky, wondering and dreaming what lies beyond our galaxy. Within our galaxy alone, there are millions upon millions of stars. This may be why it interests us to learn about all that we cannot see. Humans have known the existence of stars since they have had eyes, and see them as white glowing specks in the sky. The mystery lies beyond the white glowing specks we see but, in the things we cannot see in the night sky such as black holes. Before I begin to speak about black holes, I will have to explain what the white glowing specks in the sky are.... [tags: Space Astronomy Essays Papers]
1549 words (4.4 pages)
- If theories of their existence are true, black holes are the most powerful force in the known physical universe. Many people are familiar with the term black hole, but few people actually know anything about them. A black hole forms as a result of a massive star running out of fuel to burn (Chaisson, 193). Once the star is no longer exerting outward force by burning off gases, it begins to collapse under it’s own intense, inward gravity (Chaisson, 193). It is like slowly letting the air out of a balloon.... [tags: essays research papers fc]
1456 words (4.2 pages)
- Black Holes Within our galaxy alone, there are millions upon millions of stars. Within our universe, there are millions upon millions of galaxies. Humans have known the existance of stars since they have had eyes. Although interpretations may have differed on what they were, they were always thought of as white glowing specks in the sky, but the mystery does not lie within what we can see, but what we can not see. There are billions of stars lighting the darkness of our universe, but the question lies in what happens when one of these enormous lamps burns out.... [tags: essays research papers]
1038 words (3 pages)
- Black Holes Black holes are objects so dense that not even light can escape their gravity, and since nothing can travel faster than light, nothing can escape from inside a black hole. Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein's general theory of relativity, we have to delve into some results of this theory to understand black holes in detail, by thinking about gravity under fairly simple circumstances.... [tags: essays research papers]
3671 words (10.5 pages)
In the future, black holes could be greatly advantageous to us. Only, it would be extremely difficult to tap their immeasurable power. One technological advance black holes could help us achieve is time travel. Most scientists say that constructing a time machine is impossible, but time travel is not against the laws of physics. And, black holes could be the key to this.
Physicists have speculated the existence of wormholes since the 1930’s. These are gateways between different parts of the universe. One is made by linking a pair of black holes. By doing this, a tunnel is created through time and space. If you traveled through one end, and exited out the other, you would be in a different time and place. The only difficulty in this is trying to keep the wormhole from closing while the traveler goes through. If it were to close, the traveler would not be able to survive to make to the other end. Also, scientists have thought that it would physically impossible to travel through the wormhole. One way it could be done is to use some sort of material capable of withstanding the great forces present. Even so, if we were able to do that, the time machine would have very limited ability. You could not go back to a time when the wormhole has not been created yet. We would also have to live in a society where we have already exploited the energy of black holes. All of this seems very, very difficult – but not impossible.
Something else, which could be beneficial to us, is if we could harness the energy of a black hole. An entire civilization (technologically advanced) could gather enough energy from it to fulfill all of its power requirements. We would have to build a structure that could withstand the immense gravitational forces around the event horizon. It would collect energy from the black hole, but energy taken this way would not be unlimited.
In the future, I believe that black holes will be more beneficial to us than threatening. Although the nearest black hole to us is fifteen light years away it would be easier to take advantage of it than have it pose any threat to us. Also, the most super massive black holes are confined to the centers of very distant galaxies. The only way a black hole could do anything bad to us is if we somehow gained access to one in the future, and an accident occurred. What if the black hole were our only power source and something were to go wrong? What would we do? Maybe black hole technology would fall into the wrong hands. If we were able to make something useful out of a black hole in the future, is it possible for someone to create a destructive weapon out of one? Still, I believe that if we could gain access to a black hole, it would be much more useful than harmful to us.
In conclusion, black holes are not theoretical (as they once were) but are a reality. Most of the aspects of black holes seem bad or threatening when first looked at, but it is possible they can be very beneficial to us in the future if we could gain access to one. Time travel, which is not impossible, can be accessible to us using black holes, although it might not be very beneficial if we do not know how to travel correctly. Finally, the fact that they could provide us with enough energy to fuel an entire society is also very beneficial.