Stars And Galaxies essay topics
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Large And Small Magellanic Clouds
864 wordsClouds are usually the last things astronomers want to see in the sky, but for those who observe in the southern hemisphere there is a notable exception to that celestial rule. The Large and Small Magellanic Clouds are among the highlights of the southern night sky. Only within the last century were astronomers able to verify their true nature. Although they seem to be two foggy patches possibly torn from the Milky Way, astronomers believe these are actually small galaxies gravitationally bound ...
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Larger Objects Like Our Galaxy
338 wordsThe Nature of Dark Matter We observe the universe around us through many scientific means. However it is through the electromagnetic spectrum, that is everything from radio waves to gamma waves, that we learn about the objects in our world and beyond. However we can also learn about our universe through indirect means, such as the effect of gravity on light as well as larger objects like our galaxy. In fact it is this indirect method of observation that has led us to the discovery of extra-solar...
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Dynamical And Gravitational Center Of The Galaxy
755 wordsKristy Pryzmont May 5th, 2001 Astronomy HAWK #4 ASTR 220 1. There is evidence that supports the hypothesis that the Milky Way Galaxy has a massive black hole at its core. At the center of our very own galaxy is a mysterious source of energy. Vast amounts of radiation pour from this compact source which may be a Supermassive Black Hole. Astronomers found an intense radio source with strings of other radio sources clustered about it in the direction of the galactic center. The intense source was n...
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Stars And Dark Matters
1,629 wordsLooking for the Invisible: Search for the Dark Matter There is perhaps no current problem of greater importance to astrophysics and cosmology than that of dark matter. The search for dark matter has dominated cosmology for half of the century. But one might ask, what is dark matter What is it consisting of And, how do we know that its there As much as 90 percent of the matter in the universe is invisible. Detecting this dark matter will help astronomers better comprehend the universe's destiny. ...
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Great Astronomers Like Edwin Hubble
1,360 wordsEdwin Powell Hubble: Great Astronomer of the 19th Century Twinkle, twinkle little star, How I wonder what you are! Up above the world so high, Like a diamond in the sky (Gardner 98). Stars are a marvelous wonder to many people, that is why some people spend most of their lives wondering what is "above the world so high" (Gardner 98). These people study and map the little twinkling stars in order to get a better meaning of them; they are astronomers. Great astronomers like Edwin Hubble, Immanuel ...
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Redshift Of Light From Distant Galaxies
608 wordsEdwin Hubble was a man who changed our view of the Universe. In 1929 he showed that galaxies are moving away from us with a speed proportional to their distance. The explanation is simple, but revolutionary: the Universe is expanding. Hubble was born in Missouri in 1889. His family moved to Chicago in 1898, where at High School he was a promising, though not exceptional, pupil. He was more remarkable for his athletic ability, breaking the Illinois State high jump record. At university too he was...
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Hubble Deep Field Image
3,876 wordsFour weeks after space-walking shuttle Endeavour astronauts repaired the Hubble Space Telescope in December 1993, an ecstatic Maryland Senator Barbara Mikulski waved a Hubble picture of the core of the spiral galaxy M 100 at her nay saying colleagues. Today, Mikulski could host a Capitol Hill star party: The orbiting telescope has generated more than 100,000 photos of celestial objects, including a cemetery of dying stars, elephant trunks of dust and hydrogen gas twisting in the Eagle Nebula, jo...
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Star Clusters
1,043 wordsOne thing us as humans have never been able to fully understand is astronomy. Always having an unexplained mystery, astronomy also has served as a way to keep time and predict the future. The word "astronomy" is defined as the study of heavenly bodies, meaning anything in the sky such as stars, galaxies, comets, planets, nebulae, and so on. Many people, if not everyone, is amazed by the night sky on a clear, moonless night. Astronomy dates back to ancient times when peoples such as the Babylonia...
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Cluster Around The Centre Of The Galaxy
1,915 wordsPart One Brief Descriptions of the Following Astronomers: Walter Baade: Baade was a German-born American, whose work gave new estimates for the age and size of the universe. During the wartime, blackouts aided his observations and allowed him to identify and classify stars in a new and useful way, and led him to increase and improve Hubble's values for the size and age of the universe (to the great relief of geologists.) He also worked on supernovae and radio stars. Milton Humason: Humason was a...
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Supernova Cosmology Project
1,102 words"There is one thing even more vital to science than intelligent methods; and that is, the sincere desire to find out the truth, whatever it may be". -Charles Sanders Pierce When it comes to science, there are many questions and few answers. Finding those few answers is what makes science interesting. One big question is science is whether or not the Universe is expanding. By observing and researching supernovas, one can decide that the Universe is expanding. The word nova means new star (Ferris ...
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