is pluto a planet

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Is Pluto A Planet

Author : David A. Weintraub
ISBN : 9781400852970
Genre : Science
File Size : 76. 79 MB
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A Note from the Author: On August 24, 2006, at the 26th General Assembly of the International Astronomical Union (IAU) in Prague, by a majority vote of only the 424 members present, the IAU (an organization of over 10,000 members) passed a resolution defining planet in such a way as to exclude Pluto and established a new class of objects in the solar system to be called "dwarf planets," which was deliberately designed to include Pluto. With the discovery of Eris (2003 UB313)--an outer solar system object thought to be both slightly larger than Pluto and twice as far from the Sun--astronomers have again been thrown into an age-old debate about what is and what is not a planet. One of many sizeable hunks of rock and ice in the Kuiper Belt, Eris has resisted easy classification and inspired much controversy over the definition of planethood. But, Pluto itself has been subject to controversy since its discovery in 1930, and questions over its status linger. Is it a planet? What exactly is a planet? Is Pluto a Planet? tells the story of how the meaning of the word "planet" has changed from antiquity to the present day, as new objects in our solar system have been discovered. In lively, thoroughly accessible prose, David Weintraub provides the historical, philosophical, and astronomical background that allows us to decide for ourselves whether Pluto is indeed a planet. The number of possible planets has ranged widely over the centuries, from five to seventeen. This book makes sense of it all--from the ancient Greeks' observation that some stars wander while others don't; to Copernicus, who made Earth a planet but rejected the Sun and the Moon; to the discoveries of comets, Uranus, Ceres, the asteroid belt, Neptune, Pluto, centaurs, the Kuiper Belt and Eris, and extrasolar planets. Weaving the history of our thinking about planets and cosmology into a single, remarkable story, Is Pluto a Planet? is for all those who seek a fuller understanding of the science surrounding both Pluto and the provocative recent discoveries in our outer solar system.

Why Isn T Pluto A Planet

Author : Steve Kortenkamp
ISBN : 0736867538
Genre : Juvenile Nonfiction
File Size : 33. 5 MB
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"A brief description of planets, including what they are, where they are, and how they orbit around the sun"--Provided by publisher.

Pluto

Author : Gregory L. Vogt
ISBN : 9780761357070
Genre : Juvenile Nonfiction
File Size : 61. 55 MB
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Learn about this fascinating planet in our Solar System.

Why Isn T Pluto A Planet

Author : Michael Portman
ISBN : 143398282X
Genre : Juvenile Nonfiction
File Size : 55. 41 MB
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"For many years, it was accepted as fact that our solar system had nine planets. However, one important meeting of astronomers in 2006 reduced that number to eight. They decided that Pluto was not a planet, a declaration that outraged some people. Readers will learn more about distant Pluto, such as how it was accidentally discovered. Brilliant photographs accompany the fascinating facts"--Provided by publisher.

Out Of The Darkness

Author : Clyde W. Tombaugh
ISBN : 9780811766647
Genre : Science
File Size : 55. 27 MB
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An adventure in scientific discovery Pluto, the farthermost planet in the solar system, some 3,673 million mites from the Sun, was discovered by Clyde Tombaugh at the Lowell Observatory in 1930. The fiftieth anniversary of Pluto's discovery will be celebrated in 1980 and OUT OF THE DARKNESS: THE PLANET PLUTO tells the exciting scientific story of the twenty-five year search for a planet X beyond Neptune, and its discovery-the only planet found in the twentieth century. The planets Mercury, Venus. Mars, Jupiter, and Saturn were all known since antiquity. Then Sir William Herschel discovered Uranus in 1781, and 65 years later, in 1846, Johann Calle and Urbain le Verner discovered Neptune. Variations in orbital perturbations of the planets and theoretical astronomy were responsible for predicting and discovering the three outermost planets (Uranus, Neptune, and Pluto) and so Pluto's story is also, to some extent, the story of its planetary neighbors. What kind of world is Pluto? Much is still a mystery (its exact size, for instance), but there are some facts. It takes 247.7 years for Pluto to revolve around the sun. From Pluto's surface, the Sun appears as a star-like point; giving only on-one-hundredth the light Earth receives, although it is still brighter than a full Moon. There is strong evidence to suggest that Pluto is an escaped satellite of Neptune, a sister moon of Triton that wandered off to become the farthermost planet revolving around the Sun. And the recent discovery of Pluto’s moon, Charon, and the speculation on a tenth planet beyond Pluto add to the mystery that still prevails 50 years after coauthor Clyde Tombaugh exclaimed “That’s it!” when he saw the change of position of a faint object on the photographic plates after examining millions of star images. That evening, the only man alive to discover a planet, went to the movies and saw Gary Cooper in The Virginian. The night sky was cloudy when he came out of the theatre, but his mind’s eye still saw the faint image of Pluto.

Pluto

Author : Barrie W. Jones
ISBN : 9781139490221
Genre : Science
File Size : 29. 82 MB
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Orbiting at the edge of the outer Solar System, Pluto is an intriguing object in astronomy. Since the fascinating events surrounding its discovery, it has helped increase our understanding of the origin and evolution of the Solar System, and raised questions about the nature and benefits of scientific classification. This is a timely and exciting account of Pluto and its satellites. The author uses Pluto as a case study to discuss discovery in astronomy, how remote astronomical bodies are investigated, and the role of classification in science by discussing Pluto's recent classification as a dwarf planet. Besides Pluto, the book also explores the rich assortment of bodies that constitute the Edgeworth–Kuiper Belt, of which Pluto is the largest innermost member. Richly illustrated, this text is written for general readers, amateur astronomers and students alike. Boxed text provides more advanced information especially for readers who wish to delve deeper into the subject.

Pluto

Author : Ralph Winrich
ISBN : 1429607270
Genre : Juvenile Nonfiction
File Size : 77. 44 MB
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Discusses Pluto and its place in the solar system as a dwarf planet.

Pluto

Author : James Roland
ISBN : 9781512438123
Genre : Juvenile Nonfiction
File Size : 43. 14 MB
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Did you know that Pluto has mountains, glaciers, and even blue skies? In July 2015 a spacecraft called New Horizons finally reached Plutoalmost ten years after it had launched! The spacecraft flew by Pluto to take the first close-up photos of the dwarf planet. When it began sending those photos back to Earth, scientists were amazed by what they saw. Pluto was more fascinating than scientists ever imagined! Read this book to learn more about New Horizons, its long journey to Pluto, and the things scientists learned from the photos of this distant dwarf planet.

A Double Planet

Author : Isaac Asimov
ISBN : 0836812328
Genre : Juvenile Nonfiction
File Size : 53. 79 MB
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Discusses the smallest, most distant, and most mysterious planet in our solar system, its discovery, its peculiar orbit, and its recently discovered satellite.

Uranus Neptune Pluto And The Outer Solar System

Author : Linda T. Elkins-Tanton
ISBN : 9781438107295
Genre : Astronomy
File Size : 84. 82 MB
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Explores the relationship between the Sun and the three outer planets of the solar system from the point of view of a planetary scientist, examining the role of Uranus, Neptune, and Pluto as recorders of the formation of the solar system.

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