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Black Holes Essay

1575 words - 7 pages

When you are outside during night time and look up, you see thousands of stars of sizes, and color. Sometimes if you are lucky you get to see planets that also glow brightly such as Mars, Jupiter, Saturn, and so on. But there is one thing that is hidden from the naked eye and can make any of the things I mentioned, disappear. That thing is called a black hole. I am studying black holes because I want to find out how they affect us now and in the future, in order to help my reader understand I will explain how a black hole works, which will be useful to understanding how they can be used for space travel and how they are in the center of every galaxy.
Black holes are the mystery of our ...view middle of the document...

Most people will think that every planet would just get sucked up right away, but that is not the case. Every single planet would continue to orbit just the way they always do but of course there would be no light source so all life on earth would die in a matter of days. Space is black and black holes are black so how do scientists locate where black holes are? When a scientist finds a black hole he doesn’t see where it is by looking at it through a high powered telescope, he looks at the effects that a black hole creates. Craig Freudenrich said that “Many black holes have objects around them, and by looking at the behavior of the objects you can detect the presence of a black hole. You then use measurements of the movement of objects around a suspected black hole to calculate the black hole's mass.” Another way to detect if there is a black hole is by the emission of radiation. Whenever a black hole is pulling in a near star it will emit x-rays whenever material comes inside of it. There is actually a star right now getting pulled into a black hole called Cyngus X-1 and the black hole is emitting jets, which is when matter is shot out of the black hole at very high speeds. The one major thing that scientists right now are stumped on is where does the matter that enters a black hole go? This is a really controversial topic, some say it turns into gravitational energy, some say it is stored somewhere inside, and some are starting to question the conservation of energy law. Now let’s go into how black holes affect us and our galaxy.
Black holes have many effects on galaxies, including ours. To know what effects they have we first have to know the sizes of black hole and the types of black holes. There are two types of black holes the first is called a stellar black hole. A stellar black hole is the most common black hole because it forms whenever a star has a supernova at the end of its life. A supernova is a giant explosion whenever the star runs out of chemicals to burn. After the explosion is just a stellar remnant. With no outward forces to counter the gravitational forces, the remnant will collapse in on itself to a point of zero volume and infinite density. That place is called the singularity. Around the singularity is a very strong gravitational field in which light cannot even escape from its grasp. That is the reason why scientists do not know what happens in or past the event horizon because there is no light. Stellar black holes are normally about 10 to 100 solar masses. A solar mass is basically saying how many of our suns could fit in the object, so something that is 100 solar masses is 100 times bigger than our sun. This is considered a baby compared to the second type of black hole out there. The second one is called a supermassive black hole and this one could be millions or billions of solar masses. The biggest one scientists have found so far is 17 billion solar masses. The formation of supermassive black holes is the mystery...

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