What theories abound to explain the cataclysmic Tunguska Explosion?
A few of the GAZILLION theories out there: End of the World? — Perhaps the earliest widely-held theory for the Tunguska explosion was that the world was about to end. Natural H-bomb — In 1989, D’Alessio and Harms suggested that some of the deuterium in a comet entering the Earth’s atmosphere may have undergone a nuclear fusion reaction, leaving a distinctive signature in the form of carbon-14. Independently, in 1990, C?sar Sirvent proposed that a deuterium comet, i.e., a comet with an anomalous high concentration of deuterium in its composition, could have exploded as a natural hydrogen bomb, generating most of the energy released. Black hole — In 1973, Albert A. Jackson and Michael P. Ryan, physicists at the University of Texas, proposed that the Tunguska event was caused by a “small” (around 1020 g to 1022 g) black hole passing through the Earth Antimatter — In 1965, Cowan, Atluri, and Libby suggested that the Tunguska event was caused by the annihilation of a chunk of antimatter
