1908 A giant fireball, most likely caused by the air burst of a large meteoroid or comet flattens 80 million trees near the Stony Tunguska River
What exactly happened in a remote area of Siberia on June 30, 1908? The short answer: no one knows, but some incredible force loud enough to be heard miles away also flattened some 80 million trees near the Stony Tunguska River. Now called the Tunguska Event, it has captured the imaginations of scientists, meteorologists, and conspiracy theorists alike.