The Tunguska impact of 30 June 1908, which destroyed 2000 square kilometres of conifer forest in a sparsely populated region, the Central Siberian Plateau, had the energy of a large hydrogen bomb . No meteorite crater associated with it has been securely identified. A number of conferences in Moscow, held around the centenary of the
event, brought home that even this fairly recent, much explored impact holds many mysteries ..
one mystery is about discover of rock from the same area . which looks like crypton of Superman Movies .. Is superman inspired by that ?
chemical composition of the 'glass stone' found that compared to ordinary bottle glass it was 7.5 times richer in nickel, 6 times in copper, 20 times in zinc, 3 times in cobalt, 3 times in titanium, and 40 times in chrome. and , it could not be artificial.
Such quantities of minerals have been found in tektites - some of which are also green. These are glassy objects formed as molten debris in meteorite impacts - and scattered widely through the air.
It is occasionally pointed out that if the 1908 impact had taken place over a metropolitan area, huge damage would have been inflicted. In the case of an impact on London, a bolide brighter than the Sun, and leaving a thick trail of
smoke, would have been seen approaching from half way across France. The gunfire-like bangs of the impact would have been heard across Britain to Ireland, north to Orkney and Denmark, and over Europe as far as Switzerland.
People would have had their hats knocked off in Glasgow and Edinburgh, topsoil would have been stripped from fields in Cheshire, trains would have been derailed throughout central England, and people in Oxford would have been thrown through the air and severely burned. An incandescent column of matter would have been
thrown 20km into the air over London ..
A meteor is believed to have burst some 5 to 10 kms above the Earth's surface in what scientists say is the largest 'impact event' on Earth in recorded history, obliterating an estimated 80 million trees.
