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Comets

Comets PDF Author: David Levy
Publisher: Simon and Schuster
ISBN: 1471109585
Category : Science
Languages : en
Pages : 252

Book Description
David Levy brings these "ghostly apparitions" to life. With fascinating scenarios both real and imagined, he shows how comets have wreaked their special havoc on Earth and other planets. Beginning with ground zero as comets take form, we track the paths their icy, rocky masses take around our universe and investigate the enormous potential that future comets have to directly affect the way we live on this planet and what we might find as we travel to other planets. In this extraordinary volume, David Levy shines his expert light on a subject that has long captivated our imaginations and fears, and demonstrates the need for our continued and rapt attention.

Comets

Comets PDF Author: David Levy
Publisher: Simon and Schuster
ISBN: 1471109585
Category : Science
Languages : en
Pages : 252

Book Description
David Levy brings these "ghostly apparitions" to life. With fascinating scenarios both real and imagined, he shows how comets have wreaked their special havoc on Earth and other planets. Beginning with ground zero as comets take form, we track the paths their icy, rocky masses take around our universe and investigate the enormous potential that future comets have to directly affect the way we live on this planet and what we might find as we travel to other planets. In this extraordinary volume, David Levy shines his expert light on a subject that has long captivated our imaginations and fears, and demonstrates the need for our continued and rapt attention.

The World of Comets

The World of Comets PDF Author: Amédée Guillemin
Publisher: London : S. Low, Marston, Searle & Rivington
ISBN:
Category : Comets
Languages : en
Pages : 620

Book Description


Seven Wonders of Asteroids, Comets, and Meteors

Seven Wonders of Asteroids, Comets, and Meteors PDF Author: Ron Miller
Publisher: Twenty-First Century Books
ISBN: 0761372792
Category : Juvenile Nonfiction
Languages : en
Pages : 84

Book Description
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.

Comets and the Horns of Moses

Comets and the Horns of Moses PDF Author: Laura Knight-Jadczyk
Publisher:
ISBN: 9781897244838
Category :
Languages : en
Pages : 418

Book Description
Laura Knight-Jadczyk's series, The Secret History of the World, is one of the most ambitious projects ever undertaken to provide a cogent, comprehensive account of humanity's true history and place in the cosmos. Following the great unifying vision of the Stoic Posidonius, Laura weaves together the study of history, mythology, religion, psychology and physics, revealing a view of the world that is both rational and breathtaking in its all-encompassing scope. This second volume, Comets and the Horns of Moses, (written in concert with several following volumes soon to be released) picks up the dangling threads of volume one with an analysis of the Biblical character of Moses -- his possible true history and nature -- and the cyclical nature of cosmic catastrophes in Earth's history. Laura skillfully tracks the science of comets, revealing evidence for the fundamentally electrical and electromagnetic nature of these celestial bodies and how they have repeatedly wreaked havoc and destruction on our planet over the course of human history. Even more startling however, is the evidence that comets and cometary fragments have played a central role in the formation of human myth and legend and the very concept of a 'god'. As she expertly navigates her way through the labyrinth of history, Laura uncovers the secret knowledge of comets that has been hidden in the great myths, ancient astronomy (and astrology) and the works of the Greek philosophers. Concluding with a look at the political and psychological implications of cyclical cometary catastrophes and what they portend for humanity today, Comets and the Horns of Moses is a marvel of original thought and keen detective work that will rock the foundations of your understanding of the world you live in, and no doubt ruffle the feathers of the many academics who still cling to an outdated and blinkered view of history.

Hazards Due to Comets and Asteroids

Hazards Due to Comets and Asteroids PDF Author: Tom Gehrels
Publisher: University of Arizona Press
ISBN: 9780816515059
Category : Science
Languages : en
Pages : 1340

Book Description
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

Comets PDF Author: Grace Hansen
Publisher: Our Galaxy
ISBN: 9781532100505
Category : Juvenile Nonfiction
Languages : en
Pages : 0

Book Description
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.

Comet

Comet PDF Author: Carl Sagan
Publisher: Ballantine Books
ISBN: 0307801055
Category : Science
Languages : en
Pages : 434

Book Description
What are these graceful visitors to our skies? We now know that they bring both life and death and teach us about our origins. Comet begins with a breathtaking journey through space astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and portents attached to them. The authors show how comets have spurred some of the great discoveries in the history of science and raise intriguing questions about these brilliant visitors from the interstellar dark. Were the fates of the dinosaurs and the origins of humans tied to the wanderings of a comet? Are comets the building blocks from which worlds are formed? Lavishly illustrated with photographs and specially commissioned full-color paintings, Comet is an enthralling adventure, indispensable for anyone who has ever gazed up at the heavens and wondered why. Praise for Comet "Simply the best." —The Times of London "Fascinating, evocative, inspiring." —The Washington Post "Comet humanizes science. A beautiful, interesting book." —United Press International "Masterful . . . science, poetry, and imagination." —The Atlanta Journal & Constitution

In the Days of the Comet

In the Days of the Comet PDF Author: Herbert George Wells
Publisher:
ISBN:
Category : Comets
Languages : en
Pages : 396

Book Description


The Comet's Curse

The Comet's Curse PDF Author: Dom Testa
Publisher: Tor Teen
ISBN: 1429981601
Category : Young Adult Fiction
Languages : en
Pages : 244

Book Description
In the gripping start to this young adult science fiction adventure series by popular Colorado radio host Dom Testa, the teenage crew of the starship Galahad must find a new home for humanity among the stars--if they fail, it will be the end of the human race.... When the tail of the comet Bhaktul flicks through the Earth's atmosphere, deadly particles are left in its wake. Suddenly, mankind is confronted with a virus that devastates the adult population. Only those under the age of eighteen seem to be immune. Desperate to save humanity, a renowned scientist proposes a bold plan: to create a ship that will carry a crew of 251 teenagers to a home in a distant solar system. Two years later, the Galahad and its crew—none over the age of sixteen—is launched. Two years of training have prepared the crew for the challenges of space travel. But soon after departing Earth, they discover that a saboteur is hiding on the Galahad! Faced with escalating acts of vandalism and terrorized by threatening messages, sixteen-year-old Triana Martell and her council soon realize that the stowaway will do anything to ensure that the Galahad never reaches its destination. The teens must find a way to neutralize their enemy. For if their mission fails, it will mean the end of the human race.... At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

Asteroids, Comets, and Meteors

Asteroids, Comets, and Meteors PDF Author: Mary-Jane Knight
Publisher: Fast Track: Our Solar System
ISBN: 9781781213681
Category : Asteroids
Languages : en
Pages : 0

Book Description
"Asteroids, comets, and other space rocks rush around the solar system. Learn about these fascinating flying masses and their place in the solar system."