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Author : Boice Daniel C (author)
Release : 1901
Genre :
Kind : eBook
Book Rating : 454/5 ( reviews)
Book Synopsis Comets in the 21st Century by : Boice Daniel C (author)
Download or read book Comets in the 21st Century written by Boice Daniel C (author). This book was released on 1901. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel C Boice
Release : 2019-04-25
Genre : Science
Kind : eBook
Book Rating : 465/5 ( reviews)
Book Synopsis Comets in the 21st Century by : Daniel C Boice
Download or read book Comets in the 21st Century written by Daniel C Boice. This book was released on 2019-04-25. Available in PDF, EPUB and Kindle. Book excerpt: Have you ever seen a comet? It is a marvelous experience, one that all humans can share, that spawns a deep yearning to understand the spectacle. Have you ever wondered what comets are and why astronomers spend so much time studying them? Now, a comet expert and an astronomical historian have come together to produce the unique book that you now hold in your hands. Using their several decades of teaching experience, the authors have concisely presented the information you need to comprehend these majestic apparitions that grace our night skies. No mathematical proficiency is needed, in fact, this book doesn't contain a single equation! Comets are cosmic Rosetta stones, bridging our current knowledge by digging back to the earliest days of our Solar Systems. How did life arise on Earth? Did comets play a significant role in bringing water and the necessary organic matter to our early Earth? How about the dinosaurs? Were they driven to extinction by a cometary impact 66 million years ago? Comets may be both the enablers and destroyers of life on Earth as we know it. These are some of the tantalizing questions discussed here. If you so desire, steps are given to join the ranks of amateur comet hunters. Astronomy is one of the last sciences where amateurs play a significant role. Your reward for discovery? A comet officially bearing your name in the history books! The next Great Comet is on its way, we just do not know when it will arrive. Armed with this book, you will be ready to enjoy this unforgettable event.
Author : Daniel Craig Boice
Release : 2019
Genre : SCIENCE
Kind : eBook
Book Rating : 447/5 ( reviews)
Book Synopsis Comets in the 21st Century by : Daniel Craig Boice
Download or read book Comets in the 21st Century written by Daniel Craig Boice. This book was released on 2019. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to bring comets into the living rooms of general households, to familiarize politicians with these fascinating objects when they ponder funding for comet research, to teach children and young students and to provide teaching tools about these very unusual objects in our skies. The presentation is very comprehensive in its description of orbits around the Sun, the development of the coma (escaping atmosphere) from a comet's nucleus and source of all activities, various types of comet tails, trailing as well as leading as a comet orbits our Sun, ancient beliefs and explanations of these phenomena and the most recent discovery of the first interstellar comet.
Author : Grace Hansen
Release : 2017-09
Genre : Juvenile Nonfiction
Kind : eBook
Book Rating : 505/5 ( reviews)
Book Synopsis Comets by : Grace Hansen
Download or read book Comets written by Grace Hansen. This book was released on 2017-09. Available in PDF, EPUB and Kindle. Book excerpt: This title will cover how comets came to be, what they are made of, where most of them are found, and why we can sometimes see them as beautiful bright streaks in the sky! Aligned to Common Core Standards and correlated to state standards. Abdo Kids Jumbo is an imprint of Abdo Kids, a division of ABDO.
Author : Tom Gehrels
Release : 1994
Genre : Science
Kind : eBook
Book Rating : 059/5 ( reviews)
Book Synopsis Hazards Due to Comets and Asteroids by : Tom Gehrels
Download or read book Hazards Due to Comets and Asteroids written by Tom Gehrels. This book was released on 1994. 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.
