This website uses cookies to ensure you have the best experience. Learn more

All About The Universe. Essay

1670 words - 7 pages

YEAR 9 SETI ASSIGNMENTOBJECTS IN THE UNIVERSEi.Explain how stars can be classified according to size, colour and temperature.Astronomers use The Hertzsprung-Russell Diagram, which is a graphical tool to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. In this diagram, the brightest stars lie near the top of the diagram and the hottest stars lie to the left. On the H-R diagram, most of the stars, including the Sun, fall along a diagonal line that goes from the upper left to the lower right of the diagram. This line is called the main sequence. The great majority of stars neighboring the Sun fall on the lower part of the H-R diagram's main sequence, and relatively few lie on the portion of the main sequence above the Sun. This means that most of the Sun's neighboring stars are both cooler and fainter (in absolute magnitude) than the Sun. A smaller population of brighter but cooler stars known as supergiants occupies the uppermost region of the diagram. Some stars, which are difficult to discover because they are so faint, lie near the bottom of the H-R diagram. These faint stars are called white dwarfs. Below is the Diagram of Main Sequence.ii.Explain what a galaxy is and describe, with examples, the four main types.A galaxy is a collection of billions of stars and matter held loosely together by gravity. They are often spread over thousands of light years. Astronomers estimate that there are about 125 billion galaxies in the universe. All the stars visible to the unaided eye from Earth belong to Earth's galaxy, the Milky Way. The Sun, with its associated planets, is just one star in this galaxy.There are four main types of galaxies:Spiral Galaxies: a galaxy consisting of an older central nucleus of stars from which extend two spiral arms of gas, dust, and newer stars. They are distinctive, not only because of their shape, but because the numbers of brighter, younger stars tend to be very high. The two arms of a spiral galaxy are often rich in star forming areas. They also contain a lot of interstellar material, visible as reddish discharge nebulae or darker dusty clouds. Some examples of Spiral Galaxies are the Whirlpool Galaxy, The Great Andromeda Spiral Galaxy and the Sombrero Galaxy.Lenticular Galaxies: The lenticular galaxies are disk galaxies without any obvious structure in their disks. This is probably because they have either used up most of their interstellar matter, so that they consist of old stars only, which have found a smooth and even allocation in the disk by the time, or because the galaxy has not closely encountered any neighbor in the past few hundred million (or few billion) years. From their appearance they look more like ellipticals rather than spirals, and have often been misclassified due to this fact. An example of a Lenticular Galaxy is the Spindle Galaxy in Sextans.Elliptical galaxies: - is the most abundant type of galaxy in the Universe. They tend to consist mostly...

Find Another Essay On All about the universe.

It's All About the Money, Money, Money

674 words - 3 pages Amazing, fabulous, and glitzy are the 3 words that come into mind when most people hear the word, “celebrities”. Well, they really aren’t. Think about all of the bad influencing they cause, think about all of the poverty in the world, and think about all of the people who are willing to risk their lives to save others. Today, despite the fact that all of these events are occurring; all what celebrities do is earn their high wages while

ALL ABOUT THE French singer-songwriter Renaud

960 words - 4 pages Over the past twenty-five years, French singer-songwriter Renaud has emerged as his country's leading exponent of chanson sociale, a rich and diverse tradition of popular song which has helped to rally, educate and galvanise dispossessed groups in French society since the first half of the nineteenth century. Renaud became well-known in the second half of the 1970s by singing about zonards (delinquent youths) from the housing estates of suburban

all about the arts of usa

3326 words - 13 pages on all year. Explain that as they read the novel, they will further explore the idea of "taking a stand," which they have been discussing for the past week. Today they will look at a specific stand and determine what the reader learns about the character from his or her stand. Distribute the Chapter 2 (pages 19-22) Text-Dependent Questions Note-catcher. Tell students that they are now going to take time to reread a key scene from Chapter 2. See

GATORADE, What’s all the hype about?

1106 words - 5 pages “Is it in you?”, “Get out what you put in”, “Win from within”. These are just a few sayings that the founders of Gatorade use to help persuade readers into thinking, “In order to be successful I need Gatorade”. This drink is a very popular performance enhancing sports beverage that athletes from all over depend on. Using the top athletes known to man in their advertisements they remain successful in fueling athletes across the globe. I have

Paley vs. Hume This is a inductive argument about the origin and nature of God, religion, and the universe

1025 words - 4 pages orbits that do not crash into each other, the sun rises and sets each morning, and human beings exist on Earth. Looking at this proof from another perspective, one can conclude that nothing is ever brought about without a creator.A person couldn't toss all of the contents of a watch into the air and expect them to fall back to the ground as a watch. Nothing happens without clashing from some intelligence, and Paley states that the universe came

All About Jack In The Lord Of The Flies

1792 words - 8 pages argument about whether building huts is more important than hunting. This is the first of many disputes they will have. The subject of the beastie comes up again. Many of the littluns are frightened of it, which is why they are building huts. Jack comments that when he is alone hunting he feels he is, " 'not hunting -- but being hunted... As though something is behind you all the time in the jungle.' "Jack has a sudden insight as to where the pigs

Considering All the Facts: Mistakes About Standardized Tests

2882 words - 12 pages Considering All the Facts: Mistakes About Standardized Tests There has been a lot of talk about standards for schools. Politicians have made this issue a campaign debate. Now everyone has jumped on the “bandwagon” and wants accountability of students’ education (Shafer, 2002). When there is a problem in the education system, teachers are the first to be blamed. They are left with the responsibility of proving they are teaching what needs

Audience Cared About Norman Lear's All in the Family

894 words - 4 pages In an interview in 1974, Producer and show creator Norman Lear said of his television sitcom, All in the Family: “People laugh harder at the things the care the most about.” ("Day at Night: Norman Lear, renowned TV producer ("All in the Family")." ) If that is true then the viewers most certainly must have cared about the topics being addressed on the show because All in the Family topped the Neilsen ratings, ranking number-one, from 1971 to

"All quiet on the western front" about World War I

908 words - 4 pages "All quiet on the western front" is a very special movie, it emphasizes the brutality of the war and how people are changed by it. The main character is Paul, who is the leader of a group of 19-year-old former university students. As we watch the film we can clearly see how his attitude towards the war and beliefs about the war change from him being proud and enthusiastic to go to the front to him questioning the whole idea of war and just

The American Dream: It's Not All About Money

1227 words - 5 pages As individuals, we have our own ideas of what the American Dream consists of. To some it may be the realm of possibilities, while to others it may be fame and fortune. America is the only country in which the idea of a national dream has been continually upheld, and we have been a model for other nations to follow. Foreigners have come here to live the dream, and all the while Americans are still struggling to find it. As we continue to

Where the rivers flow by scott walker... all about

719 words - 3 pages beliefs.As children grow they come into their own and can no longer blindly accept the tradition to which they have been born.The process of developing our own stance of faith over against the faith of tradition the integration of faith.We project our faith on to our children - on a personal note I hope that I will find and project the right things to my children. This book really made me think about that.Intuition - The feeling of something a

Similar Essays

This Essay Is About A Magical Eraser. Great For A Philisophical Essay, Or If You Have One Of "Thoes Teachers" That Are Contemplating The Universe All The Time

692 words - 3 pages rubber molecules themselves when in contact with UV rays. As we came to know it, everything does revolve around our sun, or at least our science does. As for the center of the universe, there is none. Very simple, the universe is not expanding, and has no limits. So as you can see, these Erasers have became very valuable, seeing as how our sun has died, the only star that we know of, capable of producing the exact right wavelengths of light to

Science Will Never Reveal All The Secrets In The Universe

592 words - 2 pages older times and now. The change in perception has also caused these Areas of Knowledge to change and progress. The perception of the future generations may be different from the current generation, which may cause these areas to change again. This process will go on for ever and these areas will keep progressing and growing just like natural sciences. If science is growing day by day, one may say that one day all the facts of the universe will be

All About The Acl Essay

1575 words - 6 pages can be torn in other instances such as during rough play, vehicular collisions, falls, and work –related injuries. According to a study performed by Jonathan Cluett, M.D., about 80% of sports-related ACL tears are “non-contact” injuries. This means that the injury does not result from any contact with another athlete. A rupture to the ACL is the result of the ligament within the knee being overstretched. This is usually caused by a “plant-pivot

All About The Religion "Wicca" Essay

1427 words - 6 pages the human mind and heart conceived-the Great Mother Goddess and her consort the Horned God" (Crowley 88). The Divine is the life force, the power that moves the Universe. The Goddess is worshipped in her ancient names: Aradia, Cerridwen, Isis, Astarte, Dione, Aphrodite, Dana, and Arianrhod. She is called all these different names because these are the names she was given through out the years. The Wiccan Goddess is worshipped in Triple form. "As