Tunguska - Impact in Siberia 1908, Comets, Asteroids, and Near-Earth Object Threats, NASA Programs to Survey and Study Asteroids and Comets (CD-ROM) [CD-ROM]

World Spaceflight News (Author)

Book Description

Publication Date: April 6, 2007

This electronic book on CD-ROM presents a library of federal government documents and publications covering all aspects of the threat posed to Earth by Near-Earth Objects (NEOs), and the Tunguska event which devastated a portion of Siberia in 1908. The Tunguska Event: The biggest meteor in recorded history shot across the Tunguska River in Russia in 1908, and exploded like a nuclear bomb. The Tunguska meteor did not make an impact crater, but some of the effects of its explosion are similar to what could happen in a large meteorite impact. At seven in the morning on June 30, 1908, a blazing meteor streaked across the sky in central Russia. It sped northwest from Lake Baikal toward the trading post of Baikit in central Siberia, an area of dense forests, wide swamps, and meandering rivers. Before reaching Baikit, the meteor exploded in a gigantic column of fire near the Tunguska River (61 N, 101.5 E). The effects of the explosion were felt worldwide. Around the globe scientists wondered at the rapid changes in atmospheric pressure and unusual vibrations in the Earth. People within a thousand kilometers of the explosion saw both the meteor and the fire column. They also heard the explosion like a series of bombs. Closer to the explosion, people felt the ground rumble and shake. At about a hundred kilometers from the explosion, people, animals and houses were scorched and thrown by a hot blast of air. Only a few people were nearer to the blast, and they reported fires, houses being blown down and burnt, and reindeer being killed by falling trees. For 20 kilometers around the center of the explosion, the forest was flattened, with the downed trees pointing away from the explosion. At the center of the blown down area, tree trunks still stood, but all their limbs had been stripped off. The Tunguska meteor and explosion were widely reported in newspapers and magazines. However, there was little scientific interest until 1927, when the Russian Academy of Sciences organize

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This CD-ROM is packed with over 34,000 pages reproduced using Adobe Acrobat PDF software - allowing direct viewing on Windows and Macintosh systems. The Acrobat cataloging technology adds enormous value and uncommon functionality to this impressive collection of government documents and material. Our news and educational discs are privately compiled collections of official public domain U.S. government files and documents - they are not produced by the federal government. They are designed to provide a convenient user-friendly reference work, utilizing the benefits of the Adobe Acrobat format to uniformly present thousands of pages that can be rapidly reviewed, searched by finding specific words, or printed without untold hours of tedious research and downloading. Vast archives of important public domain government information that might otherwise remain inaccessible are available for instant review no matter where you are. This book-on-a-disc format makes a great reference work and educational tool. There is no other reference that is as fast, convenient, comprehensive, thoroughly researched, and portable - everything you need to know, from the federal sources you trust.

Product Details

• CD-ROM: 34226 pages
• Publisher: Progressive Management (April 6, 2007)
• Language: English
• ISBN-10: 1422009076
• ISBN-13: 978-1422009079
• Product Dimensions: 5.6 x 4.8 x 0.4 inches
• Shipping Weight: 2.4 ounces (View shipping rates and policies)
• Amazon Best Sellers Rank: #9,826,397 in Books (See Top 100 in Books)