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| -Signs, Portents, and the Weather- |
| Today in History: the Tunguska Event |
| 2009-06-30 |
| The Tunguska event, sometimes referred to as the Tunguska explosion, was a massive explosion that occurred near the Podkamennaya Tunguska River in what is now Krasnoyarsk Krai of Russia, between 7:00 and 8:00 AM on June 30, 1908. The explosion was most likely caused by the airburst of a large (around 20 m (66 ft) across) meteoroid or comet fragment at an altitude of 5 to 10 kilometers (3-6 mi) above the Earth's surface. . . . The energy of the blast was estimated to be between 10 and 20 megatons of TNT, 1,000 times more powerful than the bomb dropped on Hiroshima, or equivalent to Castle Bravo, the most powerful nuclear bomb ever detonated by the US. . . . |
| Posted by:Mike |
| #4 And what's below the 5-10 km level? 90% of the atmosphere, that's what. |
| Posted by: mojo 2009-06-30 14:36 |
| #3 Bright Pebbles: LOL for sure. |
| Posted by: Canuckistan sniper 2009-06-30 12:41 |
| #2 Some people think that one or more of the circular lakes nearby are impact craters. Problem is glacial action can produce similar circular lakes. But finding a large chunk of meteorite would put the alien spaceship theories to bed finally. |
| Posted by: phil_b 2009-06-30 11:54 |
| #1 Rubbish, it was the mexican food and candles conference going on at the time... |
| Posted by: Bright Pebbles 2009-06-30 07:56 |