Producing the equivalent amount of energy as 15 megatons of TNT, the Tunguska event is considered to be one of the most powerful explosions recorded in history. Don't miss the season finale of #ConspiraciesDecoded tonight at 10p on Science Channel. | Science Channel

The Tunguska Event in 1908 was a blast in Siberia unleashing 185 times more energy than the Hiroshima bomb. 800 sq. mi. of forest was destroyed; experts at the time believed it was a meteor strike. They were surprised when they found no impact crater. What had happened? | Science Channel

On June 30, 1908, a massive explosion tore through the air above a remote forest in Siberia, Russia. This was the Tunguska Event, and it remains the largest impact event on Earth in recorded history. Witnesses described a fireball brighter than the sun trailing across the sky, followed by a blast so powerful it knocked people off their feet 40 miles away. The heat was so intense that one man felt as if his shirt was on fire. Here is the mind-blowing part: there was no impact crater. Scientists b