Hazards Due to Comets and Asteroids - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Hazards Due to Comets and Asteroids write by Tom Gehrels. This book was released on 1994. Hazards Due to Comets and Asteroids available in PDF, EPUB and Kindle. 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.
Comets, Asteroids, and Meteors
Comets, Asteroids, and Meteors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Comets, Asteroids, and Meteors write by Dennis B. Fradin. This book was released on 1984. Comets, Asteroids, and Meteors available in PDF, EPUB and Kindle. Describes in simple terms the meteors, comets, and asteroids that are part of our solar system and discusses the various theories concerning their origin and their effect on life on Earth.
Comets, Meteors, and Asteroids
Comets, Meteors, and Asteroids - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Comets, Meteors, and Asteroids write by Seymour Simon. This book was released on 2009-06. Comets, Meteors, and Asteroids available in PDF, EPUB and Kindle. Explores how comets, meteors, and asteroids move through our solar system, and explains the ingredients that make a comet's tail and other topics
Seven Wonders of Asteroids, Comets, and Meteors
Seven Wonders of Asteroids, Comets, and Meteors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Seven Wonders of Asteroids, Comets, and Meteors write by Ron Miller. This book was released on 2011-01-01. Seven Wonders of Asteroids, Comets, and Meteors available in PDF, EPUB and Kindle. From earliest times, humans have wondered about the sky above them and have studied all visible objects. People began to identify differences between stars and planets, and as technology advanced with telescopes and space probes, they sought deeper understanding of the millions of bits of debris rocketing through the solar system. Scientists determined that most of these objects are left over from the creation of the planets and their moons. They classified these leftovers into categories such as asteroids, comets, and meteors. In this book, we'll explore seven wonders of asteroids, comets, and meteors. Ceres is a huge mountain-sized asteroid that orbits with other asteroids between Mars and Jupiter. Other marvels include Ganymede, the largest asteroid in the group called Earthgrazers or Near-Earth Objects, and Halley's comet, a ball of ice, that passes Earth every seventy-five or so years. We'll also explore the amazing impact that space debris can have on planets and moons. The Borealis Basin, a wondrous crater more than 5,000 miles across, formed when an asteroid collided with Mars in the ancient past. Then we will travel to the far-off Kuiper belt, where as many as 200 million icy bodies orbit, and wonder at the mystery of planetlike objects, such as Pluto and Charon. Finally, we’ll can experience a space wonder firsthand by standing outside on a night in August to watch the spectacular Perseid meteor shower fill the sky.
Asteroids, Comets and Meteors
Asteroids, Comets and Meteors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Asteroids, Comets and Meteors write by Rosalind Mist. This book was released on 2008. Asteroids, Comets and Meteors available in PDF, EPUB and Kindle. "An introduction to asteroids, comets, and meteors, including what they are made of, where they are, and how they interact with other bodies of the solar system"--Provided by publisher.
