Download or read book How Asteroids Shaped Earth written by Jane P. Gardner and published by Pogo Books. This book was released on 2019-12-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this book, early fluent readers will learn about asteroids, their composition, how they have changed Earth's landscape, and how they could change the future of life on Earth and in space"--
Download or read book Shapes and Spins of Near Earth Asteroids written by Michael W. Busch and published by Universal-Publishers. This book was released on 2010-05 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asteroids are diverse and numerous solar system objects, from the large number of objects in the main asteroid belt to the relatively small near-Earth population. Understanding their physical properties is essential to understanding the evolution of the solar system, and asteroid morphology is a complex field in its own right. The histories of individual asteroids, and particularly near-Earth objects, reflect continuous interaction among their shapes, rotation states, and orbits due to the effects of radiation pressure. Radar astronomy has provided detailed information on the orbits, sizes, shapes, rotation states, and composition of many asteroids. To improve the capabilities of asteroid radar observations, I have developed the technique of radar speckle tracking. The echoes from different points on the surface of a radar target interfere with each other, producing a pattern of bright and dark speckles across the surface of the Earth. Using radio astronomy techniques, I track the motion of speckles between several ground stations during a radar experiment to accurately determine the rotation state of the target. Speckle tracking is a powerful tool both to determine the orbital evolution of near-Earth asteroids, particularly potential Earth impactors, and to survey the overall physical properties of the asteroid population. In addition, I have studied applying the techniques of adaptive optics and radio interferometry to asteroid science. These will become more useful with the next generation of asteroid-detecting surveys and the construction of large sub-millimeter interferometers. Interferometry in particular will soon be able to survey the entire asteroid belt.
Download or read book Asteroids IV written by Patrick Michel and published by University of Arizona Press. This book was released on 2015-12-31 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: "More than forty chapters detail our current astronomical, compositional, geological, and geophysical knowledge of asteroids, as well as their unique physical processes and interrelationships with comets and meteorites"--Provided by publisher.
Download or read book Exploration of Near Earth Objects written by National Research Council and published by National Academies Press. This book was released on 1998-06-04 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comets and asteroids are in some sense the fossils of the solar system. They have avoided most of the drastic physical processing that shaped the planets and thus represent more closely the properties of the primordial solar nebula. What processing has taken place is itself of interest in decoding the history of our solar neighborhood. Near-Earth objects are also of interest because one or more large ones have been blamed for the rare but devastating events that caused mass extinctions of species on our planet, as attested by recent excitement over the impending passage of asteroid 1997 XF11. The comets and asteroids whose orbits bring them close to Earth are clearly the most accessible to detailed investigation, both from the ground and from spacecraft. When nature kindly delivers the occasional asteroid to the surface of Earth as a meteorite, we can scrutinize it closely in the laboratory; a great deal of information about primordial chemical composition and primitive processes has been gleaned from such objects. This report reviews the current state of research on near-Earth objects and considers future directions. Attention is paid to the important interplay between ground-based investigations and spaceborne observation or sample collection and return. This is particularly timely since one U.S. spacecraft is already on its way to rendezvous with a near-Earth object, and two others plus a Japanese mission are being readied for launch. In addition to scientific issues, the report considers technologies that would enable further advances in capability and points out the possibilities for including near-Earth objects in any future expansion of human exploration beyond low Earth orbit.
Download or read book Impact written by Elizabeth Rusch and published by . This book was released on 2017 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Asteroids come in all shapes and sizes--and hit our planet in them, too. But what happens if a catastrophically large one approaches earth? By looking on the ground at historical asteroid craters and present-day falls, and up into space for the big ones yet to come, a wide variety of scientists are trying to figure out how to track asteroids--and how to avoid devastating impacts in the future."--
Download or read book What If an Asteroid Hit Earth written by Holly Cefrey and published by Children's Press (Dublin). This book was released on 2002 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series will make readers wonder what might happen if particular events occurred. Grounded in fact, each book assesses the possibility or threat of an event, from melting ice caps to a fuel shortage. Each book also offers suggestions on how to respond to these environmental and ecological challenges before it's too late.
Download or read book Catching Stardust written by Natalie Starkey and published by Bloomsbury Publishing. This book was released on 2018-03-08 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Astonishing' - New Scientist Icy, rocky, sometimes dusty, always mysterious – comets and asteroids are among the Solar System's very oldest inhabitants, formed within a swirling cloud of gas and dust in the area of space that eventually hosted the Sun and its planets. Locked within each of these extra-terrestrial objects is the 4.6-billion-year wisdom of Solar System events, and by studying them at close quarters using spacecraft we can coerce them into revealing their closely-guarded secrets. This offers us the chance to answer some fundamental questions about our planet and its inhabitants. Exploring comets and asteroids also allows us to shape the story of Earth's future, enabling us to protect our precious planet from the threat of a catastrophic impact from space, and maybe to even recover valuable raw materials from them. This cosmic bounty could be as useful in space as it is on Earth, providing the necessary fuel and supplies for humans as they voyage into deep space to explore more distant locations within the Solar System. Catching Stardust tells the story of these enigmatic celestial objects, revealing how scientists are using them to help understand a crucial time in our history – the birth of the Solar System, and everything contained within it.
Download or read book Journey Through the Asteroid Belt written by Mark Dillard and published by The Rosen Publishing Group, Inc. This book was released on 2014-12-15 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: It’s the plot of many sci-fi movies: An asteroid is hurtling toward Earth! But is this really a danger we face? And what exactly are asteroids? This book answers these and many more questions about the millions of asteroids in our solar system and the large orbiting belt in which most are found.
Download or read book Shapes and Dynamics of Granular Minor Planets written by Ishan Sharma and published by Springer. This book was released on 2016-11-01 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops a general approach that can be systematically refined to investigate the statics and dynamics of deformable solid bodies. These methods are then employed to small bodies in the Solar System. With several space missions underway and more being planned, interest in our immediate neighbourhood is growing. In this spirit, this book investigates various phenomena encountered in planetary science, including disruptions during planetary fly-bys, equilibrium shapes and stability of small rubble bodies, and spin-driven shape changes. The flexible procedure proposed here will help readers gain valuable insights into the mechanics of solar system bodies, while at the same time complementing numerical investigations. The technique itself is built upon the virial method successfully employed by Chandrasekhar (1969) to study the equilibrium shapes of spinning fluid objects. However, here Chandrasekhar’s approach is modified in order to study more complex dynamical situations and include objects of different rheologies, e.g., granular aggregates, or “rubble piles”. The book is largely self-contained, though some basic familiarity with continuum mechanics will be beneficial.
Download or read book Asteroids and the Asteroid Belt written by Ruth Owen and published by The Rosen Publishing Group, Inc. This book was released on 2012-08-15 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes how asteroids are formed and discusses the types of asteroids that are contained in the asteroid belt between the orbits of Mars and Jupiter, with details about some of the asteroid collisions from the past.
Download or read book Colliding Worlds written by Simone Marchi and published by Oxford University Press. This book was released on 2021-06-24 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simone Marchi presents the emerging story of how cosmic collisions shaped both the solar system and our own planet, from the creation of the Moon to influencing the evolution of life on Earth. The Earth emerged out of the upheaval and chaos of massive collisions in the infancy of the Solar System, more than four billion years ago. The largest of these events sent into orbit a spray of molten rocks out of which the Moon coalesced. As in ancient mythological tales, this giant catastrophe marks the birth of our planet as we know it. Space exploration has shown that signs of ancient collisions are widespread in the Solar System, from the barren and once-habitable Mars to the rugged asteroids. On Earth these signs are more subtle, but still cataclysmic, such as the massive asteroid strike which likely sparked the demise of the dinosaurs and many other forms of life some 66 million years ago. Signatures of even more dramatic catastrophes are concealed in ancient rocks. These events wreaked havoc on our planet's surface, influencing global climate and topography, while also enriching the Earth with gold and other rare elements. And recently, modern science is finding that they could even have contributed to developing the conditions conducive to life. In Colliding Worlds, Simone Marchi explores the key role that collisions in space have played in the formation and evolution of our solar system, the development of planets, and possibly even the origin of life on Earth. Analysing our latest understanding of the surfaces of Mars and Venus, gleaned from recent space missions, Marchi presents the dramatic story of cosmic collisions and their legacies.
Download or read book Catastrophism written by Richard J. Huggett and published by Verso. This book was released on 1997 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most dramatic intellectual events of the last decade has been the stunning re-emergence of the catastrophist paradigm in the biological and earth sciences From killer asteroids to emergent viruses, it has become evident that the history of life on earth has been shaped—far more than previous orthodoxies would allow ... by extreme events and non-linear processes. The old "uniformitarian" dogma of steady-rate evolution has been decisively challenged by the research of contemporary neo-catastrophists like Stephen Jay Gould, David Raup, Stuart Ross Taylor, Ursula Marvin and Kenneth Hsu. Whether debating the origin of the moon or the current human impact on the biosphere, they urge us to recognize the radically event- or chance-driven structure of natural history. Surveying these various theories of uniformitarian and neo-catastrophist thought in a clear and accessible fashion, and seeking a path towards a new and workable synthesis, Richard Hugget provides a superb introduction to the ideas which have defined the way we look at the world.
Download or read book Could an Asteroid Hit the Earth written by Rosalind Mist and published by Capstone Classroom. This book was released on 2006 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses asteroids, meteors, and other objects in space that could come to Earth and do great damage.
Download or read book Geological Implications of Impacts of Large Asteroids and Comets on the Earth written by Leon Theodore Silver and published by Geological Society of America. This book was released on 1983-02-01 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comets and Asteroids written by E. M. Hans and published by Raintree. This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses asteroids, comets, and meteors and their encounters with Earth.
Download or read book Impact Earth written by Austen Atkinson and published by Virgin Books Limited. This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: As more asteroids enter our solar system, our chances of a collision increase by the day. This work examines the impact phenomenon describing the importance of Deathrock collisions in the Earth's history, the potential dangers and alleged cover-ups of near misses.
Download or read book The Lonely Existence of Asteroids and Comets written by Mark Andrew Weakland and published by Capstone. This book was released on 2019-05-01 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a dark night as you watch the sky with your friends, a rock with a fiery tail shoots across the sky. A comet! Asteroids and comets hurtle through space, sometimes a little too close to Earth. But did you know that they are linked to life on this planet? From the asteroid Ceres to HalleyÕs comet, blast into space and enter the lonely existence of asteroids and comets.
