What If An Asteroid Hit Earth
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What If An Asteroid Hit Earth
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Author : Holly Cefrey
language : en
Publisher: Children's Press (Dublin)
Release Date : 2002
What If An Asteroid Hit Earth written by Holly Cefrey and has been published by Children's Press (Dublin) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Juvenile Nonfiction categories.
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.
If An Asteroid Hit Earth
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Author : Ray Spangenburg
language : en
Publisher: Franklin Watts
Release Date : 2001-03-01
If An Asteroid Hit Earth written by Ray Spangenburg and has been published by Franklin Watts this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-03-01 with Juvenile Nonfiction categories.
Examines the origins of asteroids, their effects on hitting the Earth in the past and the present, and many of the asteroids in the solar system.
If An Asteroid Hit Earth
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Author : Ray Spangenburg
language : en
Publisher: Turtleback
Release Date : 2001-03-01
If An Asteroid Hit Earth written by Ray Spangenburg and has been published by Turtleback this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-03-01 with Juvenile Nonfiction categories.
Examines the origins of asteroids, their effects on hitting the Earth in the past and the present, and many of the asteroids in the solar system.
An Asteroid Strike
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Author : Alex Woolf
language : en
Publisher: Raintree
Release Date : 2014-06-05
An Asteroid Strike written by Alex Woolf and has been published by Raintree this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-05 with Juvenile Nonfiction categories.
Can you imagine what our lives would be like after a devastating asteroid strike? What effect would the resulting tsunami, storms, and dust cloud have? What would happen to the climate, wildlife, and our food supplies? This book traces the possible consequences of a global event on this scale, with ideas and evidence based on similar scenarios that are a part of fact and fiction.
Defending Planet Earth
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2010-07-21
Defending Planet Earth written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-21 with Science categories.
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.
Fire In The Sky
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Author : Gordon L. Dillow
language : en
Publisher: Scribner
Release Date : 2020-08-04
Fire In The Sky written by Gordon L. Dillow and has been published by Scribner this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-04 with Science categories.
This “accessible and always entertaining” (Booklist) combination of history, pop science, and in-depth reporting offers a fascinating account of the asteroids that hit Earth long ago and those streaming toward us now, as well as how prepared we are against asteroid-caused catastrophe. One of these days, warns Gordon Dillow, the Earth will be hit by a comet or asteroid of potentially catastrophic size. The only question is when. In the meantime, we need to get much better at finding objects hurtling our way, and if they’re large enough to penetrate the atmosphere without burning up, figure out what to do about them. We owe many of science’s most important discoveries to the famed Meteor Crater, a mile-wide dimple on the Colorado Plateau created by an asteroid hit 50,000 years ago. In his masterfully researched Fire in the Sky, Dillow unpacks what the Crater has to tell us. Prior to the early 1900s, the world believed that all craters—on the Earth and Moon—were formed by volcanic activity. Not so. The revelation that Meteor Crater and others like it were formed by impacts with space objects has led to a now accepted theory about what killed off the dinosaurs, and it has opened up a new field of asteroid observation that is brimming with urgency. Dillow looks at great asteroid hits of the past and modern-day asteroid hunters and defense planning experts, including America’s first Planetary Defense Officer. Satellite sensors confirm that a Hiroshima-scale blast occurs in the atmosphere every year, and a smaller, one-kiloton blast every month. While Dillow makes clear that the objects above can be deadly, he consistently inspires awe with his descriptions of their size, makeup, and origins. Both a riveting work of popular science and a warning to not take for granted the space objects hurtling overhead, Fire in the Sky is, ultimately, a testament to our universe’s celestial wonders.
Dark Matter Dark Energy Dark Gravity
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Author : Stephen Perrenod
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2013-04-17
Dark Matter Dark Energy Dark Gravity written by Stephen Perrenod and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Dark energy (Astronomy) categories.
Dark Matter, Dark Energy and Dark Gravity make life possible!This book for the lay reader provides a summary of the latest astrophysical observational results and theoretical insights into what we know and what we hope to learn about dark matter, dark energy, and dark gravity.How did the profound beauty of our Earth, our Solar System, our Milky Way galaxy and indeed our universe unfold? Dark matter, dark energy, and dark gravity have made all the difference in how the universe has developed, and have been key to creating the overall environment that makes life possible. We have only recently developed the ability to begin unlocking their secrets, thus providing a deeper insight into how a universe of our type is possible. It seems that because of dark matter, dark energy and dark (weak) gravity, our universe has the right attributes for the development of complex structure and the evolution of intelligent life that can engage in the quest to understand our world. These "dark" or more hidden attributes of the cosmos have very good outcomes.In particular, the existence of dark matter makes it easier to form complex structures, including galaxies, stars and planets through gravitational collapse of denser regions of the universe. Planets are the most suitable abodes for the development of life. Dark energy acts to extend the lifetime of the universe by counteracting gravity and driving continued expansion of the universe.Even as far back as the 1930s there has been evidence that most of the matter in the universe was not visible via electromagnetic radiation (optical light, radio waves, etc.). By the last few decades of the 20th century, the case for a considerable amount of this dark matter was very strong. It is the second largest contributor to the total mass-energy of the universe. We don't know what it is and there are various candidates to explain it; nevertheless we see the gravitational effects of dark matter everywhere on the largest scales. Recent observational results indicate that dark matter dominates by a factor of 6 relative to the ordinary matter that makes up stars, planets, and living things.We now know that the major contributor to the mass-energy of the universe is not the substantial dark matter, but the 'newer' so-called dark energy. Dark energy acts to some extent as a negative gravity, and for the last several billion years has driven the expansion of the universe to a faster and faster pace, overcoming even the gravitational effect of dark matter. We have a general idea that it is the irreducible energy found in every volume of space, even in the absence of matter - in the vacuum. We don't understand why it takes the value that it does, one that is small in quantum particle physics terms, but nevertheless is of great significance on the large cosmological scale of the universe. The third important aspect to consider is not a mass-energy component, but the nature of gravity and space-time. The big question here is - why is gravity so relatively weak, as compared to the other 3 forces of nature? These 3 forces are the electromagnetic force, the strong nuclear force, and the weak nuclear force. Gravity is different - it has a dark or hidden side. It may very well operate in extra dimensions beyond the normal 4 dimensions of space-time that we can observe. This is what we mean in this book by "dark gravity".
Mysteries Of Meteors Asteroids And Comets
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Author : Ellen Labrecque
language : en
Publisher: Solving Space's Mysteries
Release Date : 2021-02-04
Mysteries Of Meteors Asteroids And Comets written by Ellen Labrecque and has been published by Solving Space's Mysteries this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-04 with categories.
Asteroid Hunters
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Author : Carrie Nugent
language : en
Publisher: Simon and Schuster
Release Date : 2017-03-14
Asteroid Hunters written by Carrie Nugent and has been published by Simon and Schuster this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-14 with Science categories.
For the first time, scientists could have the knowledge to prevent a natural disaster epic in scale—an asteroid hitting the earth and in this exciting, adventuresome book, Carrie Nugent explains how. What are asteroids, and where do they come from? And, most urgently: Are they going to hit the Earth? What would happen if one was on its way? Carrie Nugent is an asteroid hunter—part of a group of scientists working to map our cosmic neighborhood. For the first time ever, we are reaching the point where we may be able to prevent the horrible natural disaster that would result from an asteroid collision. In Asteroid Hunters, Nugent reveals what known impact asteroids have had: the extinction of the dinosaurs, the earth-sized hole Shoemaker Levy 9 left in Jupiter just a few decades ago, how the meteorite that bursted over Chelyabinsk in Russia could have started a war, and unlucky Ms. Anne Hodges—the only person (that we know of) in US history to be the victim of a direct hit. Nugent also introduces the telescope she uses to detect near-Earth asteroids. Ultimately, detection is the key to preventing asteroid impact, and these specialized scientists are working to prevent the unthinkable from happening. If successful, asteroid hunting will lead to the first natural disaster humans have the know-how and the technology to prevent. The successful hunt and mapping of asteroids could mean nothing less than saving life on earth.
Collision Course
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Author : John Nelson
language : en
Publisher: The Rosen Publishing Group, Inc
Release Date : 2007-12-15
Collision Course written by John Nelson and has been published by The Rosen Publishing Group, Inc this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-15 with Juvenile Nonfiction categories.
An asteroid hitting Earth may sound like science fiction, but it is a real danger. This book explores what the different scenarios might be and how we can prepare ourselves in case such a disaster should occur.