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 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.

"At 7.14 a.m. on 30 June 1908, a huge fireball exploded in the Siberian sky. A thousand times the force of the Hiroshima bomb, it flattened an area of remote. Tunguska forest bigger than Greater London, forming a mushroom cloud that almost reached into space." "Surendra Verma tells the incredible story of the fireball and of the scientists and charlatans alike who have been seduced by it. He takes an exhilarating ride around one of science's greatest mysteries - and ends by pointing a finger at a prime suspect."--BOOK JACKET.

At 7.14 a.m on 30 June 1908 a huge fireball exploded in the Siberian sky. A thousand times the force of the hiroshima bomb, it flattened an area of remote Tunguska forest bigger that Greater London, forming a mushroom cloud that almost reached into space. What was it? A century on, and no one knows for sure. Suspects range from comets or mini black holes into the realms of science fiction and conspiracy, a laser beam fired by extra-terrestrials or an early nuclear experiment. This is an exhilarating ride around one of science's gretest mysteries....

In 1908, thunderous blasts and blazing fires from the sky descended upon the desolate Tunguska territory of Siberia. The explosion knocked down an area of forest larger than London and was powerful enough to obliterate Manhattan. The mysterious nature of the event has prompted a wide array of speculation and investigation, including from those who suspected that aliens from outer space had been involved. In this deeply researched account of the Tunguska explosion and its legacy in Russian society, culture, and the environment, Andy Bruno recounts the intriguing history of the disaster and researchers' attempts to understand it. Taking readers inside the numerous expeditions and investigations that have long occupied scientists, he foregrounds the significance of mystery in environmental history. His engaging and accessible account shows how the explosion has shaped the treatment of the landscape, how uncertainty allowed unusual ideas to enter scientific conversations, and how cosmic disasters have influenced the past and might affect the future.

Leading specialists in various disciplines were first invited to a multidisciplinary workshop funded by ICSU on the topic to gain a better appreciation and perspective on the subject of comet/asteroid impacts as viewed by different disciplines. This volume provides a necessary link between various disciplines and comet/asteroid impacts.

The book describes the discovery of a scientific theory for fireball objects seen in the sky including ball lightning and a type of UFO. For centuries these lights have been seen without a satisfactory explanation. Ball lightning is part of that mystery but easily explained by Coleman's vortex fireball theory which hypothesizes the existence of aerial burners in the sky. The theory suggests vortices can combust a fuel within the confines of vortex breakdown of a vortex. This idea was published by the author in scientific sources and has been demonstrated experimentally at a University facility. This could be the definitive solution. Observations are cited from the literature that show that such a previously unrecognised scientific phenomenon does exist. This unified theory clarifies other puzzles such as the Tunguska "meteor" and gives a coherent explanation of ball lightning as a small fiery vortex.

The focus of this interdisciplinary volume is on four areas of nanoparticle research: characterization, manipulation, and potential effects on humanity and the environment. The book includes a comprehensive collection of data on industrial nanoparticle creation and the characterization of the nanoscale products of these processes. The authors describe the effects of these nanoscale structures on human health and discuss prospective implementations for detection and characterization of nanoparticles in the environment. They recommend, utilizing the most up-to-date understanding of nanotechnology, methods for limiting the negative effects of these products on the environment and human health through manipulation, sorting, and filtration.

Updated 2024 edition of the most popular book on the riddle of the incredible Siberian explosion of 1908, The Mystery of the Tunguska Fireball, first published in 2005. At about 7:15 a.m. on June 30, 1908, a massive fireball exploded in the skies over Siberia. With force a thousand times greater than the Hiroshima atomic bomb, it levelled over 2,000 square kilometres of the remote Tunguska forest-an area larger than metropolitan London-sending a mushroom cloud towering into the stratosphere. What was it? A wayward black hole, a crashing comet, a rogue asteroid, an exotic rock of antimatter or mirror matter, a methane gas blast from below, an alien spacecraft, a laser beam fired by extraterrestrials, or an early experiment in nuclear physics that got out of hand? Nearly a century and a quarter on, this grand dame of science mysteries still fascinates scientists and charlatans alike. Whichever way you look, the Tunguska event is a captivating journey in serious science, speculative science and science fiction. This informative and engaging book invites you to explore that journey and perhaps glimpse the truth behind this enigmatic explosion. Surendra Verma is a journalist and author based in Melbourne, Australia, since 1970. He has published numerous popular science books in Australia, the UK and the US, and his books have been translated into 14 languages other than English.