Download the tunguska mystery astronomers universe in pdf or read the tunguska mystery astronomers universe in pdf online books in PDF, EPUB and Mobi Format. Click Download or Read Online button to get the tunguska mystery astronomers universe in pdf book now. This site is like a library, Use search box in the widget to get ebook that you want.

The Tunguska Mystery

Author: Vladimir Rubtsov
Publisher: Springer Science & Business Media
ISBN: 9780387765747
Size: 59.60 MB
Format: PDF, ePub, Docs
View: 4893
Download and Read
The purpose of the book is a dual one: to detail the nature and results of Tunguska investigations in the former USSR and present-day CIS, and to destroy two long-standing myths still held in the West. The first concerns alleged “final solutions” that have ostensibly been found in Russia or elsewhere. The second concerns the mistaken belief that there has been little or no progress in understanding the nature of the Tunguska phenomenon. All this is treated by the author in a scholarly and responsible manner. Although the book does present certain unusual findings of Russian and Ukrainian scholars, it is important to stress that this is not a sensational book; it is, rather, a serious exposition of the results of rational investigations into a difficult scientific problem. We are demonstrating the true complexity of the problem that is now entering its second century of existence. Simple meteoritic models cannot explain all the characteristics of this complicated event, and therefore certain so-called “unconventional hypotheses” about the nature of the Tunguska explosion are to be considered as well.

The Mystery Of The Tunguska Fireball

Author: Surendra Verma
Publisher: Icon Books
ISBN: 184046447X
Size: 63.90 MB
Format: PDF, ePub
View: 1756
Download and Read
On 30 June 1908 a mysterious fireball exploded in the Siberian sky and flattened 2,000 square kilometres of the remote Tunguska forest. As no crater and no material from outer space were ever found, a meteorite could not have caused the Tunguska explosion. So what did? This 'grand dame of science mysteries' soon turns 100 but continues to seduce scientists and charlatans alike, all hoping to explain what caused the explosion. The scientists' suspects include a comet, an asteroid, a mini black hole, a rock of antimatter, a mirror matter asteroid, and a methane gas blast from below. X-files-type explanations include an alien spacecraft, a laser beam fired by extraterrestrials in an attempt to communicate with the earthlings, and an early experiment in nuclear physics which got out of hand. Numerous websites, conspiracy theories and sensational TV documentaries on the Fireball abound. In a fast-moving and non-technical narrative The Tunguska Fireball discusses all theories and then analyses the evidence to point an accusing finger at a prime suspect.

The Tunguska Event

Author: Charles River Charles River Editors
Publisher: CreateSpace
ISBN: 9781503099609
Size: 76.27 MB
Format: PDF, ePub, Docs
View: 4340
Download and Read
*Includes pictures *Includes accounts of the event by eyewitnesses and scientists studying it *Includes a bibliography for further reading "On 30 June 1908, a powerful blast ripped open the sky near the Podkamennaya Tunguska River in Russia and flattened more than 2,000 square kilometers of forest. Eyewitnesses described a large object tearing through the atmosphere and exploding before reaching the ground, sending a wave of intense heat racing across the countryside. At an estimated 3 to 5 megatons of TNT equivalent, it was the biggest impact event in recorded history." - Mark Pelow, author of "Rock samples suggest meteor caused Tunguska blast" When the atomic bombs were used against Hiroshima and Nagasaki in August 1945, they ushered in a new era of power so destructive that nuclear weapons have not been used in any combat since then. The pictures of the devastated cities demonstrated the sheer strength of such weapons, and the impact was alarming enough to lead to efforts not only to control the proliferation of such weapons but to denuclearize altogether. It was hard for people to comprehend the power behind nuclear weapons in 1945, but that was due in great measure to the fact that most people were unfamiliar with the Tunguska event, which took place over 35 years earlier in a sparsely populated region of Siberia. On June 30, 1908, an explosion with an epicenter near the Tunguska River flattened an area of about 2,000 square miles, destroying tens of millions of trees and killing countless numbers of wildlife. Miraculously, there were no recorded human casualties as a result of the since named Tunguska event, which generated the energy equivalent of 1,000 of the atomic bombs dropped on Hiroshima. The shockwave alone would have measured 5.0 on the Richter scale. It goes without saying that had the Tunguska event happened in a major metropolitan area, it would've been one of the biggest catastrophes in history, but due to the isolated area and the turbulent affairs in Russia during the World Wars and the Bolshevik Revolution, the event was mostly ignored during the early 20th century, and it is still often overlooked today, even as scientists continue to study it in an attempt to explain what happened. Although conspiracy theories have been proffered (as with other mysterious events), it is widely believed today that the explosion was caused by an asteroid or a comet, but people still continue to debate certain aspects of the blast, and Tunguska is constantly cited as a reason it is necessary to identify and monitor objects in space near Earth. The Tunguska Event chronicles the history and mystery behind the massive explosion, including eyewitness accounts and theories over what caused it. Along with pictures and a bibliography, you will learn about the Tunguska event like never before, in no time at all.

The Tungus Event Or The Great Siberian Meteorite

Author: John Engledew
Publisher: Algora Publishing
ISBN: 0875867812
Size: 72.99 MB
Format: PDF, Kindle
View: 7696
Download and Read
This popular science book shares the fascination of the Tungus Event, a major mystery of the 20th century, in a factual and informed way. It provides "on-the-ground" descriptions of the site and explains the findings and the puzzlement of international scientists who have investigated it over the decades. After a brief and readable overview of comets, meteors, the sun and the solar system, the author ponders the range of possible explanations for the "great Siberian meteorite." The research is up to date, factual and scientific. While making no absurd claims to solving the puzzle, the author studies some intriguing clues in NASA's orbit diagrams for Comet Encke, and he is bold in discussing the possible causes of what was the greatest natural explosion in recorded history. As he points out, [Hypotheses] include rogue asteroids, mini black holes and even alien intervention....These explanations are not entirely equal to the facts. In the unique case of the Tunguska event, there was wholesale destruction to the mighty taiga woodlands but none of the debris that one would expect should exist from the body itself. Evidence like a strewn field of meteorite debris or meteoric dust on the trees and ground were never found, nor were any craters, in the area beneath the site of the fireball nor anywhere along the path it took. There are no craters because the Tunguska Cosmic Body (TCB) did not hit the ground. Atmospheric anomalies prior to the dramatic appearance of the fiery body puzzlingly occurred for several days, adding to the enigma. There are just a handful of English-language books on this subject. The most recent, The Tunguska Mystery, by the Russian Rubstov (Astronomers Universe, Springer Science 2009) is authoritative but highly technical and hard going for the general reader. Mr. Engledew instead tells the story in a balanced and engaging style.


Author: Robert Foot
Publisher: Universal-Publishers
ISBN: 9781581126457
Size: 42.84 MB
Format: PDF, ePub
View: 4416
Download and Read
In a revolutionary new theory, Dr. Robert Foot of the University of Melbourne argues that meteorites composed of mirror matter could impact with the Earth without leaving any ordinary fragments. Indeed, the theory seems to provide a simple explanation for the puzzling Tunguska event--the blast which destroyed a huge area of Siberian forest in 1908. While scientists have attributed this explosion to an ordinary meteorite, no traces of such an object have ever been found. Moreover, there are frequent smaller such events, occurring on a yearly basis, which are even more puzzling. Foot's new book lays clear the scientific case for mirror matter. It describes the fascinating evidence for its existence including, astronomical observations suggesting that most of our galaxy is made from a new form of matter--dark matter. It explains puzzling Jupiter sized planets only a few million miles from their host star, and the mysterious slowing down of spacecraft in our solar system. Remarkably, it is also possible that Pluto might even be a mirror world, which would explain various anomalous features of its orbit. Perhaps the most important consequence of all this--if true--is the possibility of actually extracting the mirror matter from the Tunguska impact site and other such sites on earth. Invisible asteroids and other cosmic bodies made of a new form of matter may pose a threat to Earth, agrees a noted Australian physicist. But the mirror matter idea has not attracted a huge following among physicists. In a recent UPI article, Howard Georgi of Harvard University says, "Foot's ideas have not attracted a huge following in the community that cares about these things, perhaps because the problems they solve, while interesting, are not the most critical puzzles that we are wrestling with." Nevertheless, mirror matter, if it exists, would be a completely new type of material with a potentially huge commercial value. Its scientific value would be of no less importance. FROM THE BACK COVER Nearly 50 years ago it was discovered that the fundamental particles, such as the electron and proton, have 'left-handed' interactions; they do not respect mirror symmetry. This experimental fact motivates the idea that a set of 'mirror particles' exist. The left-handedness of the ordinary particles can then be balanced by the right-handedness of the mirror particles. In this way mirror reflection symmetry can exist but requires something profoundly new. It requires the existence of a completely new form of matter called 'mirror matter'. Remarkably the mirror matter theory is capable of simply explaining a large number of contemporary puzzles in astrophysics and particle physics. The evidence ranges from observations suggesting that most of the matter in the Universe is invisible, to unexpected properties of ghostly particles called 'neutrinos'. This book explains this fascinating theory and its evidence at a level accessible to the non-specialist.

Natural Disasters In A Global Environment

Author: Anthony N. Penna
Publisher: John Wiley & Sons
ISBN: 1118327543
Size: 36.89 MB
Format: PDF, ePub
View: 5018
Download and Read
Natural Disasters in a Global Environment is a transnational, global and environmental history of natural and man-made disasters. Detailed case studies of past and present events are presented in a historical narrative, making use of the most recent scholarship. Examines a range of disasters including volcanoes, earthquakes, floods, landslides, hurricanes, famines, and more Highlights the role of science in studying natural disasters and describes the mechanisms responsible for them Features a range of case studies which can be used in conjunction with one another or as standalone examples Covers scientific material in a lucid and accessible style suited to undergraduate students or those outside of scientific disciplines Traces the transition of our understanding of disasters, from religious and superstitious explanations to contemporary scientific accounts

The Astronomer S Universe

Author: Herbert Friedman
Publisher: W W Norton & Company Incorporated
ISBN: 9780393317633
Size: 48.91 MB
Format: PDF
View: 4183
Download and Read
Summarizes current knowledge and theories in the field of astronomy, from supernovas and black holes to quasars and the big bang theory, and provides updated material on new discoveries and projects such as the Hubble Space Telescope and cosmic-ray resear

The Edge Of Science

Author: Alan Baker
Publisher: Random House
ISBN: 1780577591
Size: 68.64 MB
Format: PDF, Docs
View: 7640
Download and Read
How did the universe begin and how will it end? What happens to us when we die? Do intelligent beings exist elsewhere in our galaxy and beyond? The Edge of Science addresses these and many other questions that have bewildered and perplexed humanity for centuries. Some of these enigmas have been solved through the ingenuity of their investigators; others remain a mystery and have given rise to equally bizarre speculations. From the Tunguska explosion of 1908 to the enigma of the Moon's origin, from the possibility of time travel to the search for zero-point energy, author Alan Baker examines the many theories that have been presented to account for the world's most enduring mysteries. Each chapter deals with an enigma that has caused wonder, excitement or fear to all who have pondered it, including: the discovery of strange fossils that hint at an unknown early history of humanity; anomalous structures photographed on the Moon and Mars; the mystery of dark matter and dark energy; and strange disappearances of people and objects. Join Alan Baker as he embarks on a strange, stimulating and sometimes frightening journey to The Edge of Science.

Discovering The Universe

Author: Neil F. Comins
Publisher: Macmillan
ISBN: 9781429230421
Size: 61.96 MB
Format: PDF
View: 2939
Download and Read
Discovering the Universe: From the Stars to the Planets engages students with an inquiry-based exploration of the universe and the scientific process. Developed with a “big picture” approach, the text first explains how the stars, the galaxies, and the entire universe formed, and then discusses planets and other components of our solar system. Students follow this natural conceptual progression within a proven learning method designed to address misconceptions and build a deep understanding of science and the world around us.

The Andromeda Galaxy And The Rise Of Modern Astronomy

Author: David Schultz
Publisher: Springer Science & Business Media
ISBN: 1461430496
Size: 69.97 MB
Format: PDF
View: 5158
Download and Read
The Andromeda Galaxy – Messier’s M31 – has an almost romantic appeal. It is the most distant object and the only extragalactic object that is visible to the unaided human eye. Now known to be about 21⁄2 million light-years away, it appears in the sky to be several times the width of the full Moon under good seeing conditions. The Andromeda Galaxy and the Rise of Modern Astronomy examines the astronomical studies of Andromeda and its importance to our developing knowledge of the universe. The book discusses how M31 was described both by the Ancients, but more importantly, by astronomers from the nineteenth century to the present. While at the start of the twentieth century the universe was thought of as a finite cosmos dominated by the Milky Way, the study of Andromeda galaxy shattered that image, leading ultimately to the conception of an infinite universe of countless galaxies and vast distances. Even today, M31 is a major focal point for new astronomical discoveries, and it also remains one of the most popular (and rewarding) celestial objects for amateur astronomers to observe and study. This book reveals the little-known history of M31 and the scientists who study it. For all who are interested in astronomy, the skies, and perhaps even the origins of the universe, The Andromeda Galaxy and the Rise of Modern Astronomy provides a first-of-its-kind accessible, informative, and highly readable account of how the study and observation of this celestial object has driven the development of astronomy from ancient times to the present.