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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309261457
Category : Science
Languages : en
Pages : 82
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Book Description
In February 2009, the commercial communications satellite Iridium 33 collided with the Russian military communications satellite Cosmos 2251. The collision, which was not the first recorded between two satellites in orbit-but the most recent and alarming-produced thousands of pieces of debris, only a small percentage of which could be tracked by sensors located around the world. In early 2007, China tested a kinetic anti-satellite weapon against one of its own satellites, which also generated substantial amounts of space debris. These collisions highlighted the importance of maintaining accurate knowledge, and the associated uncertainty, of the orbit of each object in space. These data are needed to predict close approaches of space objects and to compute the probability of collision so that owners/operators can decide whether or not to make a collision avoidance maneuver by a spacecraft with such capability. The space object catalog currently contains more than 20,000 objects, and when the planned space fence radar becomes operational this number is expected to exceed 100,000. A key task is to determine if objects might come closer to each other, an event known as "conjunction," and the probability that they might collide. The U.S. Air Force is the primary U.S. government organization tasked with maintaining the space object catalog and data on all space objects. This is a complicated task, involving collecting data from a multitude of different sensors-many of which were not specifically designed to track orbiting objects-and fusing the tracking data along with other data, such as data from atmospheric models, to provide predictions of where objects will be in the future. The Committee for the Assessment of the U.S. Air Force's Astrodynamic Standards collected data and heard from numerous people involved in developing and maintaining the current astrodynamics standards for the Air Force Space Command (AFSPC), as well as representatives of the user community, such as NASA and commercial satellite owners and operators. Preventing collisions of space objects, regardless of their ownership, is in the national security interested of the United States. Continuing Kepler's Quest makes recommendations to the AFSPC in order for it to create and expand research programs, design and develop hardware and software, as well as determine which organizations to work with to achieve its goals.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309261457
Category : Science
Languages : en
Pages : 82
Get Book Here
Book Description
In February 2009, the commercial communications satellite Iridium 33 collided with the Russian military communications satellite Cosmos 2251. The collision, which was not the first recorded between two satellites in orbit-but the most recent and alarming-produced thousands of pieces of debris, only a small percentage of which could be tracked by sensors located around the world. In early 2007, China tested a kinetic anti-satellite weapon against one of its own satellites, which also generated substantial amounts of space debris. These collisions highlighted the importance of maintaining accurate knowledge, and the associated uncertainty, of the orbit of each object in space. These data are needed to predict close approaches of space objects and to compute the probability of collision so that owners/operators can decide whether or not to make a collision avoidance maneuver by a spacecraft with such capability. The space object catalog currently contains more than 20,000 objects, and when the planned space fence radar becomes operational this number is expected to exceed 100,000. A key task is to determine if objects might come closer to each other, an event known as "conjunction," and the probability that they might collide. The U.S. Air Force is the primary U.S. government organization tasked with maintaining the space object catalog and data on all space objects. This is a complicated task, involving collecting data from a multitude of different sensors-many of which were not specifically designed to track orbiting objects-and fusing the tracking data along with other data, such as data from atmospheric models, to provide predictions of where objects will be in the future. The Committee for the Assessment of the U.S. Air Force's Astrodynamic Standards collected data and heard from numerous people involved in developing and maintaining the current astrodynamics standards for the Air Force Space Command (AFSPC), as well as representatives of the user community, such as NASA and commercial satellite owners and operators. Preventing collisions of space objects, regardless of their ownership, is in the national security interested of the United States. Continuing Kepler's Quest makes recommendations to the AFSPC in order for it to create and expand research programs, design and develop hardware and software, as well as determine which organizations to work with to achieve its goals.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309261422
Category : Science
Languages : en
Pages : 82
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Book Description
In February 2009, the commercial communications satellite Iridium 33 collided with the Russian military communications satellite Cosmos 2251. The collision, which was not the first recorded between two satellites in orbit-but the most recent and alarming-produced thousands of pieces of debris, only a small percentage of which could be tracked by sensors located around the world. In early 2007, China tested a kinetic anti-satellite weapon against one of its own satellites, which also generated substantial amounts of space debris. These collisions highlighted the importance of maintaining accurate knowledge, and the associated uncertainty, of the orbit of each object in space. These data are needed to predict close approaches of space objects and to compute the probability of collision so that owners/operators can decide whether or not to make a collision avoidance maneuver by a spacecraft with such capability. The space object catalog currently contains more than 20,000 objects, and when the planned space fence radar becomes operational this number is expected to exceed 100,000. A key task is to determine if objects might come closer to each other, an event known as "conjunction," and the probability that they might collide. The U.S. Air Force is the primary U.S. government organization tasked with maintaining the space object catalog and data on all space objects. This is a complicated task, involving collecting data from a multitude of different sensors-many of which were not specifically designed to track orbiting objects-and fusing the tracking data along with other data, such as data from atmospheric models, to provide predictions of where objects will be in the future. The Committee for the Assessment of the U.S. Air Force's Astrodynamic Standards collected data and heard from numerous people involved in developing and maintaining the current astrodynamics standards for the Air Force Space Command (AFSPC), as well as representatives of the user community, such as NASA and commercial satellite owners and operators. Preventing collisions of space objects, regardless of their ownership, is in the national security interested of the United States. Continuing Kepler's Quest makes recommendations to the AFSPC in order for it to create and expand research programs, design and develop hardware and software, as well as determine which organizations to work with to achieve its goals.
Author: Methodist Church (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 690
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Book Description
Author: Methodist Episcopal Church
Publisher:
ISBN:
Category : Methodist conferences
Languages : en
Pages : 504
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Book Description
Author: Methodist Episcopal Church
Publisher:
ISBN:
Category : Methodist conferences
Languages : en
Pages : 1122
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Book Description
Author: David Marshall Miller
Publisher: Cambridge University Press
ISBN: 1108349862
Category : Philosophy
Languages : en
Pages : 551
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Book Description
The early modern era produced the Scientific Revolution, which originated our present understanding of the natural world. Concurrently, philosophers established the conceptual foundations of modernity. This rich and comprehensive volume surveys and illuminates the numerous and complicated interconnections between philosophical and scientific thought as both were radically transformed from the late sixteenth to the mid-eighteenth century. The chapters explore reciprocal influences between philosophy and physics, astronomy, mathematics, medicine, and other disciplines, and show how thinkers responded to an immense range of intellectual, material, and institutional influences. The volume offers a unique perspicuity, viewing the entire landscape of early modern philosophy and science, and also marks an epoch in contemporary scholarship, surveying recent contributions and suggesting future investigations for the next generation of scholars and students.
Author: Jean Dietz Moss
Publisher: University of Chicago Press
ISBN: 9780226542355
Category : Biography & Autobiography
Languages : en
Pages : 372
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Book Description
In this fascinating work, Jean Dietz Moss shows how the scientific revolution begun by Copernicus brought about another revolution as well—one in which rhetoric, previously used simply to explain scientific thought, became a tool for persuading a skeptical public of the superiority of the Copernican system. Moss describes the nature of dialectical and rhetorical discourse in the period of the Copernican debate to shed new light on the argumentative strategies used by the participants. Against the background of Ptolemy's Almagest, she analyzes the gradual increase of rhetoric beginning with Copernicus's De Revolutionibus and Galileo's Siderius nuncius, through Galileo's debates with the Jesuits Scheiner and Grassi, to the most persuasive work of all, Galileo's Dialogue. The arguments of the Dominicans Bruno and Campanella, the testimony of Johannes Kepler, and the pleas of Scriptural exegetes and the speculations of John Wilkins furnish a counterpoint to the writings of Galileo, the centerpiece of this study. The author places the controversy within its historical frame, creating a coherent narrative movement. She illuminates the reactions of key ecclesiastical and academic figures figures and the general public to the issues. Blending history and rhetorical analysis, this first study to look at rhetoric as defined by sixteenth- and seventeenth-century participants is an original contribution to our understanding of the use of persuasion as an instrument of scientific debate.
Author: Lewis S. Feuer
Publisher: Routledge
ISBN: 1000680096
Category : Science
Languages : en
Pages : 260
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Book Description
The birth of modern science was linked to the rise in Western Europe of a new sensibility, that of the scientific intellectual. Such a person was no more technician, looking at science as just a job to be done, but one for whom the scientific stand-point is a philosophy in the fullest sense. In The Scientific Intellectual, Lewis S. Feuer traces the evolution of this new human type, seeking to define what ethic inspired him and the underlying emotions that created him.Under the influence of Max Weber, the rise of the scientific spirit has been viewed by sociologists as an offspring of the Protestant revolution, with its asceticism and sense of guilt acting as causative agents in the rise of capitalism and the growth of the scientific movement. Feuer takes strong issue with this view, pointing out how it is at odds with what we know of the psychological conditions of modern societies making for human curiosity and its expression in the observation of and experiment with nature.Feuer shows that wherever a scientific movement has begun, it has been based on emotions that issue in what might be called a hedonist-libertarian ethic. The scientific intellectual was a person for whom science was a 'new philosophy,' a third force rising above religious and political hatreds, seeking in the world of nature liberated vision, a intending to use and enjoy its knowledge. In his new introduction to this brilliantly readable volume, Professor Feuer reviews the book's critical reception and expands the scope of the original edition to include fascinating discussions of Francis Bacon, Thomas Edison, Charles Darwin, Thomas Hardy, and others. The Scientific Intellectual will be of interest to scientists and intellectual historians.
Author: Walter Greiner
Publisher: Springer Science & Business Media
ISBN: 3642034349
Category : Science
Languages : en
Pages : 574
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Book Description
The series of texts on Classical Theoretical Physics is based on the highly successful courses given by Walter Greiner. The volumes provide a complete survey of classical theoretical physics and an enormous number of worked out examples and problems.
Author: Peter Pesic
Publisher: MIT Press
ISBN: 9780262661263
Category : History
Languages : en
Pages : 202
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Book Description
The scientific quest seen as a search for nature's secrets.
