Biggest explosion in documented history is STILL a mystery: New study fails to find cause of 1908 Tunguska blast that 'split the sky in two' and flattened 80 million Siberian trees
史上最大爆炸仍谜云重重
Cheyenne Macdonald For Dailymail.com
SuperDec
Cosmic, someones been watching the young ones again, So a comet skimmed the earth, not close enough to impact, but close enough skim, please remember the Earth is round.SuperDecReply toSuperDec
Do you know what breaking the speed of sound is like ? or a sonic boom ? now would you know that 100 years ago ? before electricity / technology /speakers, now a comet travelling at 20,000+ miles per hour, what would be your best guess, if it crashed we would have another Ice age, did you ever visit Greenwich Observatory as a kid, then hit the books to understand what they meant, no, well you should have got to know your local librarian, a freshly picked rose helps get to books others have to go to university to get.TootyMan
I thought the one that wiped out the dinosaurs was the biggest? Other than the big bangAztec
"The blast sent shock waves as far away as England?" Seriously? Wouldn't a blast wave that strong have caused damage still halfway between Tunguska and England, for example breaking windows in Moscow?JohnReply toAztec
Read up on how atmospheric focusing works, variations in atmospheric density can cause large shock waves to be refracted horizontally. This can cause damage in locations hundreds even thousands of miles away yet closer locations in between can be left completely unscathed.Rubber Johnny
Huge gas exploration was already a feature across Siberia by 1909, not always commercially viable but still releasing significant amounts of methane into low levels of the atmosphere, perhaps two or three hundred feet above the earth. What you'd be looking at there is a massive gas/air cloud several miles across in every direction, just sitting there waiting for a spark, probably lightning, to kick things off. KABOOM! No need for asteroids. Just mother nature doing its thing. It's all covered in secondary school textbooks.Old IronReply toRubber Johnny
That would require a significant amount of gas, released within a short timespan, sufficient to achieve precise flammable proportion to the available oxygen, held close to ground by a low inversion layer, in a perfectly stable atmosphere without trace of breeze, and a suitable ignition source, as you say. The degree of precision and coincidence required would not be impossible, but massively improbable even if all the necessary conditions were present at the time and place. Catch is, there's no way to learn, much less to prove, whether they were.Wolfman Kelly
The comet, asteroid or the object explode and disintegrates in the upper atmosphere. The explosion touch ground and rip the trees not causing the crater. If no traces of the asteroid was found probably a ice cometscowieReply toWolfman Kelly
There is no such thing as an ice comet. Comets are made of rock. A comet's tail and coma don't come from ice melting in the sun; they are an electrical discharge phenomenon. As a comet traverses the sun's electrical field during its eccentric orbit it builds up a potential difference with respect to it's environment which prompts the comet to emit ions in an attempt to equalize charge. If the comet passes close to a planet/moon it gets the chance to equalize charge with that body in a single instantaeous electrical discharge; a lightning strike more powerful than anything a cloud can produce, powerful enough to produce an airburst. That's what happened at Tunguska.DB1
Fascinating even in so remote an area one imagines there would be human casualties?评论
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