Huge explosion have been erupted here.
A full century after the mysterious Tunguska explosion in Siberia leveled an area nearly the size of Tokyo, debate continues over what caused it.
Many questions remain as to what crashed into the Earth from above — how big it was and what it was made of. Some question whether it even came from space at all, or whether it erupted from the ground instead.
And there is always speculation that it was caused by a UFO or famed inventor Nikola Tesla’s “death ray.”
other theories
* A UFO crash. Struck by the similarity of Tunguska and Hiroshima decades later, a science fiction writer named Alexander Kazantsev wrote a story in which the Tunguska blast was the exploding nuclear power plant of a spaceship from Mars. A few Russian scientists took up the cause and claimed to find various bits of evidence — never substantiated — for a civilized alien explanation.
* The annihilation of a chunk of antimatter from space. This does not account for mineral debris the explosion left behind.
* A black hole zipping through Earth. This also does not account for mineral debris the explosion left behind, and there was no subsequent explosion as such a black hole, having tunneled through the Earth, would have shot back out through the surface of the Atlantic.
* A Nikola Tesla “death ray.” The man who pioneered radio and modern alternating current electric power (AC) systems was often seen as a mad scientist. One story alleges he test-fired a death ray on the evening of June 30, 1908, and once he found out about the Tunguska event, he dismantled the weapon, deeming it too dangerous to remain in existence.