| Papers [1-15] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "EXTRA SOLAR PLANETS": |
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Extra-Solar Planets, 2005.
A look at the search for extra-solar planets.
1,640 words (approx. 6.6 pages), 9 sources, MLA, $ 53.95
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Abstract
This paper begins with a definition and description of the planets within our solar system and then goes on to discuss extra-solar planets and the ongoing search for them. The paper describes some of the technology and techniques employed in this search, a discovery of an extra-solar planet by scientists at the Geneva Observatory in Switzerland, and recent advances in locating extra-solar planetary objects.
From the Paper
"The word planet means "wanderer" in Greek. It derives from the fact that planets within our solar system seem generally to wander eastward about the so-called "fixed stars across the zodiac constellations (Kolb). There is no clear consensus precisely defining what constitutes a planet, as distinguished from brown dwarfs, which are the material remnants of burned out ancient stars whose masses where too small to form white dwarfs or collapse completely, forming black holes in the manner that stars much larger than ten solar masses, or ten times the mass of our sun (Hawking)."
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Solar Energy and Solar Cells, 2003.
This paper is on solar energy, solar cells (panels) and the breakdown of what happens in the process.
1,137 words (approx. 4.5 pages), 3 sources, MLA, $ 39.95
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Abstract
This paper provides a full explanation about the way in which solar energy is created. The paper looks at the process in details and then discusses what benefits solar energy may have in the future.
From the Paper
"Solar Energy comes from Solar cells which today are mostly made of silicon, one of the most common elements on Earth. The crystalline silicon solar cell was one of the first types to be developed and it is still the most common type in use today. They do not pollute the atmosphere and they leave behind no harmful waste products. Photovoltaic cells work effectively even in cloudy weather and unlike solar heaters, are more efficient at low temperatures. They do their job silently and there are no moving parts to wear out. It is no wonder that one marvels on how such a device would function. To understand how a solar cell works, it is necessary to go back to some basic atomic concepts. In the simplest model of the atom, electrons orbit a central nucleus, composed of protons and neutrons."
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Extra! Extra! Read All About It, 2002.
This essay discusses traditional newspapers in comparison to their new-age e-newspaper counterparts found on the Internet.
1,110 words (approx. 4.4 pages), 0 sources, $ 38.95
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Abstract
Written in the first person in a discussion format, this paper relates why the writer doubts that printed newspapers will be taken over by newspapers found online. Advantages of each are discussed.
From the Paper
"Similar to the reasons why I do not believe e-books will overtake traditional printed books, I also do not foresee online versions of newspapers replacing their counterparts in daily circulation. The primary conflict with an online newspaper that comes to mind is portability. You do not have the option to bring an electronic newspaper into the bathroom or stuff it in your back pocket for future reference. Furthermore, I know that at some point in their lives, everyone has rolled up a newspaper to swat a fly or some other insect that found its way inside the house. And nobody in their right mind is going to chuck their computer or palm pilot across the room to kill a bug. Secondly, there are countless instances in which newspaper readers will cut out clippings that in some way hold a certain significance to them. When looking back on these articles years later, people are not going to want to see a piece of printer paper; they will want to see something authentic-the original section of the newspaper from which the clipping was removed."
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Extrasolar Planets, 2007.
This paper describes and analyzes the search for extrasolar planets within the last decade.
2,578 words (approx. 10.3 pages), 11 sources, MLA, $ 77.95
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Abstract
This paper examines recent discoveries in the search for extrasolar planets. The author also discusses how this has become a viable area of research in astronomy. This study is divided into six sections. They include: definition of planets, how planets form, methods of detection, properties of extrasolar planets, and future implications of detection. The paper concludes acknowledging how extrasolar planetary research has opened up avenues of thought and possibilities that were seen as impossible just a few decades ago.
Outline:
Introduction and History
Definition of Planets and Extrasolar Planets
How Extrasolar Planets Form
Methods of Detection
Properties of Extrasolar Planets
Future Implications of Detection
Conclusion
From the Paper
"The search for extrasolar planets has a long history. The notion that there might be other worlds existing in the heavens can be demonstrated as far back as ancient Greece. In more modern times, a Catholic monk was condemned for heresy in 1584 for suggesting that the sky was populated by countless suns and countless other Earths ("From Intuition" par. 1). The purpose of this essay is to describe and analyze the current search for extrasolar planets that has produced significant results within the last decade. What was once a fanciful possibility in astronomy has become a viable avenue of research, with new extrasolar planets being discovered every year. The remainder of this study will be divided into six sections. They include: definition of planets, how planets form, methods of detection, properties of extrasolar planets, future implications of detection, and conclusions."
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The Planets, 2002.
A brief overview of the planets of Venus, Saturn and Jupiter.
3,221 words (approx. 12.9 pages), 30 sources, MLA, $ 92.95
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Abstract
This paper examines three planets namely Venus, Saturn and Jupiter and provides some factual information about them and their motion relative to earth. For each planet in turn, it provides information on the history of its name, examines its atmosphere and composition, missions to the particular planet as well as providing a comparison of the chemical and physical makeup of the planets with Earth.
From the Paper
"It takes Saturn 29.5 years to complete one revolution around the Sun. As it circles the Sun, the angle of the Saturn's rings relative to the Sun varies by 27.3 degrees. During this motion a very peculiar phenomenon is observed. Twice during the 29.5 years, the rings are edge-on to the Sun. Since, as seen from Saturn, the Earth appears not more then 6 degrees from the Sun, it too crosses the ring plane at around the same time. Since Saturn's rings are so thin, when they are edge-on to the Earth, they appear to disappear when viewed with a small telescope."
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Survey of the Planets, 1998.
A look at the space age and how it has developed over time
2,285 words (approx. 9.1 pages), 6 sources, $ 70.95
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Abstract
A detailed survey of the planets. The author looks at the space age and how knowledge has developed over time. Includes a detailed discussion of each era from 1957 when the Soviet Union launched Sputnik to the present.
From the Paper
"Think of how exciting it must have been to live in the days when the telescope was first turned to the heavens. Every part of the sky offered a new surprise. The planets were transformed from specs of light to globes with unique characteristics. Could there be a more thrilling time of planetary discovery than those days of Galileo and the first telescopes? Yes, we live in such a time. How could the glimpses those early telescopes gave compare in richness to the dozens upon dozens of photographs and storehouses full of other data collected in the past few decades? Thanks to the spacecraft, we have finally started to know the planets as real places, both like and unlike Earth."
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Survey of the Planets, 1997.
2,289 words (approx. 9.2 pages), 6 sources, $ 70.95
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Abstract
This is a paper on planetary discovery. The author traces the short history of manned and unmanned trips to the moon, Mars, Venus, Jupiter etc. All the Apollo journeys are discussed, along with Viking and Space Shuttle trips.
From the Paper
"Think of how exciting it must have been to live in the days when the telescope was first turned to the heavens. Every part of the sky offered a new surprise. The planets were transformed from speaks of light to globes with unique characteristics. Could there be a more thrilling time of planetary discovery than those days of Galileo and the first telescopes? Yes, we live in such a time. How could the glimpses those early telescopes gave compare in richness to the dozens upon dozens of photographs and storehouses full of other data collected in the past few decades? Thanks to the spacecraft, we have finally started to know the planets as real places, both like and unlike Earth."
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The Planet Earth, 2007.
A look at Earth as compared to the other planets in our solar system.
1,957 words (approx. 7.8 pages), 4 sources, MLA, $ 62.95
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Abstract
This paper examines why Earth is the only planet in our solar system capable of sustaining life and how it is the only planet that has plentiful liquid water and an atmosphere that can protect the planet from the harmful ultra-violet rays of the Sun. The paper attempts to determine what makes Earth so special by using comparative planetology to understand what makes Earth a habitat for life and what makes it so different from the other planets in our solar system.
Outline:
Terrestrial Planets
Jovian Planets
Conclusion
From the Paper
"If we were to look at Earth as a starting point to compare the other eight planets in our solar system, the first thing we notice from space is the magnificent blue color and swirls of clouds. This is an inviting sight and is the first hint at why life is found on our planet. Earth has many features that the other planets do not have. Earth has many features that make it unique. Earth is made of rock and metal. It is one of the four terrestrial planets and has the largest Moon in the solar system. Earth has abundant volcanic activity because of its size in comparison to the other terrestrial planets. With the abundance of water and oxygen, Earth's atmosphere stays in balance and is able to continue supporting life. The liquid oceans help to remove carbon dioxide from the atmosphere and the presence of a stratosphere helps protect the surface from the deadly ultra-violet rays of the Sun. Another unique feature of Earth is plate tectonics. Plate tectonics acts as giant conveyor belt that moves the mantle of Earth around, which constantly changes the look of our planet. Although Earth's interior needs much more exploration, scientists can tell about the composition of the deepest regions of Earth by using seismic waves following an earthquake. By reading this seismic data carefully, scientists get a better understanding of interior Earth."
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Pluto, Charon, and Planet X, 2002.
The history, search and discovery of the planet Pluto
2,145 words (approx. 8.6 pages), 10 sources, MLA, $ 67.95
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Abstract
This paper focuses on the history and the discovery of the nineth planet in the Solar System, Pluto, and its lone moon, Charon. The paper discusses various theories about what originally propelled astronomers to search for this mysterious planet, known as Planet X, and how its name Pluto finally came about after its discovery.
From the Paper
"John Murray, an astronomer from Open University in the U.K. proposes a theory in which two large objects may gravitationally affect the orbits of long period comets. These two objects would have to be about 32,000 AU from the Sun and extremely massive, about the size of Jupiter. John J. Matese of the University of Louisiana at Lafayette proposes a similar theory. His involves two to three Jupiter sized objects orbiting at about 2.3 trillion miles from the Sun. He says that their gravity is responsible for the deflection of roughly 25% of the known 82 Oort Cloud comets into the inner solar system. Matese says that these massive objects do not necessarily have to be planets; they may be undetected brown dwarfs - undetected because the IRAS (Infrared Astronomical Satellite) of the 1980s was not sensitive enough to distinguish an individual brown dwarf against the galactic plane."
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Is Pluto a Planet?, 2006.
A discussion on whether Pluto should be classified as a planet or a comet.
1,609 words (approx. 6.4 pages), 6 sources, MLA, $ 52.95
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Abstract
The paper discusses how Pluto recently came under fire regarding the legitimacy of its status as a planet of the solar system. The paper examines the controversy that began when the International Astronomical Union (IAU) in 1999, was implicated with the decision of reconsidering Pluto's planetary status. The paper concludes that the issue was finally set to rest when the IAU duly rejected the status change as a rumour or misinformation and Pluto's status remained safe.
Table of Contents:
Introduction
Pluto Statistics
Pluto Planet or comet (A Discussion)
Pluto (A Misfit?)
Conclusion
Bibliography
From the Paper
"First and foremost comes the fact of size. As mentioned earlier, Pluto is the smallest planet and in terms of its size is even smaller than seven of the moons of other planets including earth's moon. Comparatively, mercury the next smallest planet is more than twice the size of Pluto. However, most astronomers brush aside this argument stating that Pluto is too big to be classified as a minor planet. For example, Ceres the largest minor planet that exists in the asteroid belt between Jupiter and mars is only 580 miles."
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Solar Energy, 2004.
An analysis of the potential of solar energy and its use.
2,449 words (approx. 9.8 pages), 12 sources, MLA, $ 74.95
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Abstract
In order to better understand the issue of solar energy, this paper presents a definition of the terms and concepts relating to solar energy. The paper examines the technologies that are currently used to put solar energy to work. A short historical background on the development of solar technology in the past sixty years is presented. The paper explores the reasons why it is important to develop solar energy and discusses its future costs and benefits.
From the Paper
"Solar energy is radiation from the Sun that can produce heat, generate electricity, or cause chemical reactions. Solar energy is inexhaustible and nonpolluting, but it is not an efficient energy source, since the Earth's atmosphere absorbs or scatters over 50% of incoming solar radiation. Solar collectors collect the radiation and transfer it as heat to a carrier fluid. It can then be used for heating. Solar cells convert solar radiation directly into electricity, by means of the photoelectric effect.
Very often, there is confusion about the various methods used to harness the sun's abundant and clean energy. Energy from the sun can be categorized in two ways: in the form of heat (or thermal energy), and in the form of light energy. Solar thermal technologies use the sun's heat energy to heat substances (such as water or air) for applications such as space heating, pool heating and water heating for homes and businesses. There is a variety of products on the market that utilize thermal energy. Often the products used for this application are called solar thermal collectors and can be mounted on the roof of a building or in some other sunny location. The sun's heat can also be used to produce electricity on a large utility-scale by converting the sun's heat energy into mechanical energy. "
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Solar Sailor, 2002.
A case study of the Solar Sailor, a Hybrid powered watercraft which reduces the impact on the environment.
1,400 words (approx. 5.6 pages), 3 sources, MLA, $ 46.95
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Abstract
This paper examines the Solar Sailor, a Hybrid powered watercraft which utilizes its sails as a means of also collecting solar power, so while the boat is being propelled by the wind the energy collected via the solar panels run the two extremely efficient electric motors. The Solar Sailor is very ecolologically and environmentally friendly since the cost of running it is very low when compared to the cost of running a diesel-powered boat. The paper looks at potential uses of the craft and discusses relevant ethical issues such as the cost of the craft itself over the environmental advantages. It concludes with the impact of the Solar Sailor on society, particularly in Australia where it was invented such as a reduction in greenhouse gas emissions and landscape protection.
From the Paper
"A 21 metre Solar Sailor costs around $3 million compared to $2 million for an equivalent diesel engine model. Even though over a 15 yr period taking into consideration fuel and maintenance costs the Solar Sailor works out to be considerably cheaper. The only thing that is stopping the Solar Sailor from becoming a worldwide success is the fact that the older style propulsion technologies enjoy a huge comfort zone, which is bolstered by the world's fiscal policies and risk-averse conservatism. The view of Dane is that "Until we start taxing people for carbon emissions, or taxing diesel for the costs it imposes on the environment, the attractions of these kinds of technologies will increase only slowly". Over time he hopes that his patience, hard economic numbers and the day-to-day performance of his Solar Sailor will win buyers over."
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The Planet Jupiter, 2003.
This paper discusses Jupiter, the largest planet in the universe.
2,445 words (approx. 9.8 pages), 9 sources, MLA, $ 74.95
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Abstract
This paper explains that Jupiter, which has a mass of 1.900e27 kg., has more than twice the mass of all the other planets' masses combined and is over 300 times the mass of the Earth. The author points out that, when observing from Earth, Jupiter can best be seen when it is near its solar opposition, which is where Jupiter and the Earth are both aligned on the same side of the sun; Jupiter rises at Earth's sunset and sets at Earth's sunrise thereby being visible all during the night hours. The paper relates that the first space probe to Jupiter was Pioneer 10 in 1973, followed by Pioneer 11, Voyager 1, Voyager 2 and Ulysses; the spacecraft Galileo is currently orbiting, sending data for at least two more years as it continues to orbit Jupiter.
From the Paper
"Jupiter has a dynamic weather system, indicated by the colorful bands at the latitudes, and the atmospheric clouds and storms. The pattern of the clouds can change within days or hours. The Great Red Spot, which is a complex storm system, moves in a counter-clockwise direction. Found throughout the clouds, with their banded appearance, are smaller storms and eddies. In the storm's center, and near the center, random motions are detected in small amounts, but motions appear to rotate in four to six days near the outer edges."
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Solar Cell Manufacturing Process, 2008.
An analysis of the steps involved in the process of solar cell manufacturing.
968 words (approx. 3.9 pages), 5 sources, MLA, $ 34.95
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Abstract
This paper discusses the process of solar cell manufacturing and looks at each step of the process in detail. The paper describes the processing stages of chlorine-free polysilicon production and describes the purity requirements for the silicon used in solar cells. The paper also briefly looks at the changes in the solar cell manufacturing industry over the past few years.
From the Paper
"The very last step of manufacturing a solar cell is adding the electrodes (electrical contacts) and interconnection strips. Electrical contacts connect each solar cell to another, creating a solar panel, and then to the receiver of the produced current. The contacts must be very thin (at least in the front) so as not to block sunlight to the cell. Metals such as silver, nickel, or copper are vacuum-evaporated through either a photo-resister, silkscreen, or they can be deposited on the exposed portion of cells that have been partially covered with wax. All three methods involve a system where the part of the cell on which a contact is not desired is protected, while the rest of the cell is exposed to the metal. And finally, the interconnection strips are soldered into place. Flux is applied to cell interconnection strips before soldering to act as a deoxidizer. It ensures better adhesion between the solder and solar cells. This provides positive contact for an electrical current and greatly lowers the probability of the current shorting out. After applying the solder and flux, the cell surfaces need to be cleaned with a chlorofluorocarbon compound."
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Photovoltaic Cells and Solar Thermal Power Plants, 2005.
A comparison of photovoltaic cells and solar thermal power plants.
2,700 words (approx. 10.8 pages), 4 sources, $ 106.95
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Abstract
This paper compares two technologies, photovoltaic cells and solar thermal power plants, both providing energy from solar radiation, but by different means and in different degrees. It looks at how the photovoltaic cell is used in limited situations for powering small appliances and how solar thermal power plants are able to produce much more energy for use on a widespread basis by consumers, industry and entire countries. The relative costs are noted, along with economies that will be realized once these systems are more widely used.
From the Paper
"This report summarizes two related technologies, the photovoltaic cell and the solar thermal power plant, both methods of producing energy from solar radiation. The photovoltaic cell is used in limited situations for powering small appliances, and solar thermal power plants are able to produce much more energy for use on a widespread basis by consumers, industry, and entire countries. The relative costs are noted, along with economies that will be realized once these systems are more widely used. Introduction One of the great unknowns in American energy policy remains the extent to which solar energy in its various forms will contribute to the nation's energy supply in the future. After the oil, embargo in 1973, considerable interest was expressed in solar energy as a potential way of producing energy and of reducing dependence on foreign oil. "
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