Download or read book Cometas y meteoros Atravesando el espacio written by Stiefel and published by Carson-Dellosa Publishing. This book was released on 2019-01-25 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: What has a head, two tails, and shoots across the sky? A comet. Coming from the far edges of the solar system, most comets travel around the Sun, while meteors appear as flashing streaks of light in the night sky. Explore these amazing celestial wonders as they zip through space! This book looks at the difference between comets and meteors and their effects on Earth. The physical characteristics of each are identified in detail. This book won’t come crashing down! It’s filled with fun facts that give additional information on this exciting science topic. This book allows students to use observations of the Sun, moon, and stars to describe patterns that can be predicted.
Download or read book Giant Gas Planets written by Kyla Steinkraus and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The four planets farthest from the Sun are called the gas giants. Jupiter, Saturn, Uranus, and Neptune are different from the other planets in our solar system. They are not solid, but are made of liquids and clouds of gas with gravity pulling it all together into a planet shape. Learn facts about the climate, gases, size, and other quirky things each of these planets possess. This book isn't filled with hot air! Pull out your telescope and see if you can observe one of these planets. This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, and used as evidence.
Download or read book More Universe at Your Fingertips written by Andrew Fraknoi and published by Astronomical Society of the pacific. This book was released on 2000 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because the original was so popular, the geniuses behind Project ASTRO have created an additional volume of activities. These 25 activities explore and explain mysteries of the universe: the moon's phases, the reasons for the seasons, comets and meteors, stars, and space exploration. Also designed in loose-leaf format, More Universe... is a great supplement to the original, or a perfect sampler if you want to start small.
Download or read book Active Galactic Nuclei and Related Phenomena written by International Astronomical Union. Symposium and published by . This book was released on 1999 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: A looseleaf (3-hole punched, binder not included) resource guide that includes a wide range of activities, annotated resource lists, and background readings, primarily for teachers who would like to incorporate more astronomy into their classroom work but may be held back by their own limited backgr
Download or read book Aztec and Maya Myths written by Karl Taube and published by University of Texas Press. This book was released on 1993 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The myths of the Aztec and Maya derive from a shared Mesoamerican cultural tradition. This is very much a living tradition, and many of the motifs and gods mentioned in early sources are still evoked in the lore of contemporary Mexico and Guatemala. Professor Taube discusses the different sources for Aztec and Maya myths. The Aztec empire began less than 200 years before the Spanish conquest, and our knowledge of their mythology derives primarily from native colonial documents and manuscripts commissioned by the Spanish. The Maya mythology is far older, and our knowledge of it comes mainly from native manuscripts of the Classic period, over 600 years before the Spanish conquest. Drawing on these sources as well as nineteenth- and twentieth-century excavations and research, including the interpretation of the codices and the decipherment of Maya hieroglyphic writing, the author discusses, among other things, the Popol Vuh myths of the Maya, the flood myth of Northern Yucatan, and the Aztec creation myths.
Download or read book The Dawn of Astronomy written by J. Norman Lockyer and published by Courier Dover Publications. This book was released on 2006-04-28 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneer in the fields of astrophysics and astro-archeology, J. Norman Lockyer believed that ancient Egyptian monuments were constructed "in strict relation to the stars." In this celebrated study, he explores the relationship between astronomy and architecture in the age of the pharaohs. Lockyer addresses one of the many points already extensively investigated by Egyptologists: the chronology of the kings of Egypt. All experts are in accord regarding the identity of the first monarch, but they cannot agree upon the dates of his reign within a thousand years. The author contends that by applying a knowledge of astronomy to the actual site orientation of the region's pyramids and temples, accurate dating can be achieved. In order to accomplish this, Lockyer had to determine the level of the ancient Egyptian ideas of astronomy. Some of his inferences have been invalidated by subsequent scholarship, but many of his other conclusions stand firm and continue to provide sensational leads into contemporary understanding of archaic astronomy.
Download or read book Defending Planet Earth written by National Research Council and published by National Academies Press. This book was released on 2010-07-21 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States spends approximately $4 million each year searching for near-Earth objects (NEOs). The objective is to detect those that may collide with Earth. The majority of this funding supports the operation of several observatories that scan the sky searching for NEOs. This, however, is insufficient in detecting the majority of NEOs that may present a tangible threat to humanity. A significantly smaller amount of funding supports ways to protect the Earth from such a potential collision or "mitigation." In 2005, a Congressional mandate called for NASA to detect 90 percent of NEOs with diameters of 140 meters of greater by 2020. Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies identifies the need for detection of objects as small as 30 to 50 meters as these can be highly destructive. The book explores four main types of mitigation including civil defense, "slow push" or "pull" methods, kinetic impactors and nuclear explosions. It also asserts that responding effectively to hazards posed by NEOs requires national and international cooperation. Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies is a useful guide for scientists, astronomers, policy makers and engineers.
Download or read book Planetary Defense written by Nikola Schmidt and published by Springer. This book was released on 2018-12-26 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planetary defense from near-Earth objects such as asteroids is a far more nuanced and challenging topic than it might seem. Each day, technology is making it easier to detect asteroid impact threats in advance, but at present, there is still no easy way to design and implement any form of global defense. This book examines how various asteroid deflection methods can change global political affairs. The authors believe that the final policy for potential Earth impacts should be based on practical engineering solutions and innovative architectural structures, while at the same time reflecting the most recent political science contributions in ethical security studies and security cosmopolitanism. Their focus is not limited to effective engineering solutions, but rather extends to how such proposals resonate in possible political structures of the future. Planetary defense cannot be achieved with technology alone; the chapters in this volume highlight the issues that arise when space science and technology intersect with political science. This complex interdisciplinary project not only demands global participation and collaboration, but also proposes the way we can achieve it. The authors explore various concepts of governance and their far-reaching implications for planetary defense and vice versa—how scientific progress in Solar System observations and asteroid collision engineering influence political science and put pressure on the international legal framework. The text is intentionally written for a diverse scholarly and diplomatic audience in a style accessible to non-specialists and practitioners and can be read by those across diverse disciplinary backgrounds.
Download or read book Archaeoastronomy and Ethnoastronomy IAU S278 written by Clive L. N. Ruggles and published by Cambridge University Press. This book was released on 2011-08-25 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: IAU Symposium 278, the ninth of the 'Oxford' conferences on cultural astronomy, presents a diverse range of disciplinary perspectives on a set of problems that continue to raise exciting and challenging new research questions and promote vigorous debate. It extends discussions about cultural astronomy beyond the community of 'Western' academics to focus on the ethnoastronomy and archaeoastronomy of South America, Central and North America, and elsewhere. Highlights include vigourous debates about Chankillo, a recently discovered solar observation site in coastal Peru dating to c. 300 BC. The first IAU Symposium devoted to this topic not only discusses new discoveries and interpretations but also considers broader issues of mutual interest across disciplines in cultural astronomy, such as field methodology and social theory. This volume is valuable not just to researchers working in these fields, but to anyone who takes an interest in the protection of astronomical heritage.
Download or read book Asteroids III written by William Frederick Bottke and published by University of Arizona Press. This book was released on 2002-01-01 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two hundred years after the first asteroid was discovered, asteroids can no longer be considered mere points of light in the sky. Spacecraft missions, advanced Earth-based observation techniques, and state-of-the-art numerical models are continually revealing the detailed shapes, structures, geological properties, and orbital characteristics of these smaller denizens of our solar system. This volume brings together the latest information obtained by spacecraft combined with astronomical observations and theoretical modeling, to present our best current understanding of asteroids and the clues they reveal for the origin an,d evolution of the solar system. This collective knowledge, prepared by a team of more than one hundred international authorities on asteroids, includes new insights into asteroid-meteorite connections, possible relationships with comets, and the hazards posed by asteroids colliding with Earth. The book's contents include reports on surveys based on remote observation and summaries of physical properties; results of in situ exploration; studies of dynamical, collisional, cosmochemical, and weathering evolutionary processes; and discussions of asteroid families and the relationships between asteroids and other solar system bodies. Two previous Space Science Series volumes have established standards for research into asteroids. Asteroids III carries that tradition forward in a book that will stand as the definitive source on its subject for the next decade.
Download or read book Legal Aspects of Planetary Defence written by Irmgard Marboe and published by BRILL. This book was released on 2021-09-27 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impacts by asteroids or comets on Earth may lead to natural disasters of catastrophic dimensions. This book addresses legal and policy aspects of ‘planetary defence’ activities by space agencies and other actors aiming at the prediction and mitigation of Near-Earth Objects (NEOs).
Download or read book Hazards Due to Comets and Asteroids written by Tom Gehrels and published by University of Arizona Press. This book was released on 1994 with total page 1340 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1993, the U.S. Department of Defense declassified information dealing with frequent explosions in the upper atmosphere caused by meteoric impact. It is estimated that impacts have occurred of a magnitude equivalent to the atomic bomb detonated at Hiroshima. Not all such space voyagers meet their end in the atmosphere, however; huge craters attest to the bombardment of earth over millions of years, and a major impact may have resulted in the extinction of dinosaurs. An impact in Siberia near the beginning of this century proves that such events are not confined to geologic time. Hazards Due to Comets and Asteroids marks a significant step in the attempt to come to grips with the threats posed by such phenomena. It brings together more than one hundred scientists from around the world, who draw on observational and theoretical research to focus on the technical problems related to all aspects of dealing with these hazards: searching for and identifying hazardous comets and asteroids; describing their statistics and characteristics; intercepting and altering the orbits of dangerous objects; and applying existent technologies—rocket boosters, rendezvous and soft-landing techniques, instrumentation—to such missions. The book considers defensive options for diverting or disrupting an approaching body, including solar sails, kinetic-energy impacts, nuclear explosives, robotic mass drivers, and various propulsion systems. A cataclysmic impact posing a threat to life on Earth is a possibility that tomorrow's technology is capable of averting. This book examines in depth the reality of the threat and proposes practical measures that can be initiated now should we ever need to deal with it.
Download or read book Impact written by Gerrit L. Verschuur and published by Oxford University Press. This book was released on 1997-12-18 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most scientists now agree that some sixty-five million years ago, an immense comet slammed into the Yucatan, detonating a blast twenty million times more powerful than the largest hydrogen bomb, punching a hole ten miles deep in the earth. Trillions of tons of rock were vaporized and launched into the atmosphere. For a thousand miles in all directions, vegetation burst into flames. There were tremendous blast waves, searing winds, showers of molten matter from the sky, earthquakes, and a terrible darkness that cut out sunlight for a year, enveloping the planet in freezing cold. Thousands of species of plants and animals were obliterated, including the dinosaurs, some of which may have become extinct in a matter of hours. In Impact, Gerrit L. Verschuur offers an eye-opening look at such catastrophic collisions with our planet. Perhaps more important, he paints an unsettling portrait of the possibility of new collisions with earth, exploring potential threats to our planet and describing what scientists are doing right now to prepare for this awful possibility. Every day something from space hits our planet, Verschuur reveals. In fact, about 10,000 tons of space debris fall to earth every year, mostly in meteoric form. The author recounts spectacular recent sightings, such as over Allende, Mexico, in 1969, when a fireball showered the region with four tons of fragments, and the twenty-six pound meteor that went through the trunk of a red Chevy Malibu in Peekskill, New York, in 1992 (the meteor was subsequently sold for $69,000 and the car itself fetched $10,000). But meteors are not the greatest threat to life on earth, the author points out. The major threats are asteroids and comets. The reader discovers that astronomers have located some 350 NEAs ("Near Earth Asteroids"), objects whose orbits cross the orbit of the earth, the largest of which are 1627 Ivar (6 kilometers wide) and 1580 Betula (8 kilometers). Indeed, we learn that in 1989, a bus-sized asteroid called Asclepius missed our planet by 650,000 kilometers (a mere six hours), and that in 1994 a sixty-foot object passed within 180,000 kilometers, half the distance to the moon. Comets, of course, are even more deadly. Verschuur provides a gripping description of the small comet that exploded in the atmosphere above the Tunguska River valley in Siberia, in 1908, in a blinding flash visible for several thousand miles (every tree within sixty miles of ground zero was flattened). He discusses Comet Swift-Tuttle--"the most dangerous object in the solar system"--a comet far larger than the one that killed off the dinosaurs, due to pass through earth's orbit in the year 2126. And he recounts the collision of Comet Shoemaker-Levy 9 with Jupiter in 1994, as some twenty cometary fragments struck the giant planet over the course of several days, casting titanic plumes out into space (when Fragment G hit, it outshone the planet on the infrared band, and left a dark area at the impact site larger than the Great Red Spot). In addition, the author describes the efforts of Spacewatch and other groups to locate NEAs, and evaluates the idea that comet and asteroid impacts have been an underrated factor in the evolution of life on earth. Astronomer Herbert Howe observed in 1897: "While there are not definite data to reason from, it is believed that an encounter with the nucleus of one of the largest comets is not to be desired." As Verschuur shows in Impact, we now have substantial data with which to support Howe's tongue-in-cheek remark. Whether discussing monumental tsunamis or the innumerable comets in the Solar System, this book will enthrall anyone curious about outer space, remarkable natural phenomenon, or the future of the planet earth.
Download or read book The Maya scribe and his world written by Michael Douglas Coe and published by . This book was released on 1977 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pablo Neruda written by Pablo Neruda and published by Grove Press. This book was released on 1974 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of poems by Chilean poet Pablo Neruda.
Download or read book The Houdini Girl Modern Erotic Classics written by Martyn Bedford and published by Hachette UK. This book was released on 2012-10-25 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fletcher 'Red' Brandon is a conjurer, an illusionist, a master of deception who uses his talents to seduce wild, impulsive Irish rose, Rosa, into his life with a simple sleight of hand. But when Rosa is killed, Red is pitched into a new world where betrayal, exploitation and violence are no act. The deeper Red delves into the life and death of the woman with who he shared one sexy, freewheeling year, the closer he comes to a painful realization: even the trickster can be tricked.
Download or read book Mitigation of Hazardous Comets and Asteroids written by M. J. S. Belton and published by Cambridge University Press. This book was released on 2004-09-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is known that large asteroids and comets can collide with the Earth with severe consequences. Although the chances of a collision in a person's lifetime are small, collisions are a random process and could occur at any time. This book collects the latest thoughts and ideas of scientists concerned with mitigating the threat of hazardous asteroids and comets. It reviews current knowledge of the population of potential colliders, including their numbers, locations, orbits, and how warning times might be improved. The structural properties and composition of their interiors and surfaces are reviewed, and their orbital response to the application of pulses of energy is discussed. Difficulties of operating in space near, or on the surface of, very low mass objects are examined. The book concludes with a discussion of the problems faced in communicating the nature of the impact hazard to the public.
