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Description of  The Tunguska Event: The Mystery of the Biggest Explosion in Recorded History

*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 Read more