Asteroid To Hit Earth!!!!! 71 replies

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tusse

I want to be like Revenge

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13th March 2004

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#71 16 years ago

An object 400 meters in diameter doesn't just disintegrate upon impact with the atmosphere, no matter the angle! Only in case its a peice of comet, made mostly of ice, can such a thing occur. And that aint harmless either... 1903 Tunguska might contain clues as to what happens in that case. The meteorite that caused the crater in Arizona (1200 m dia.) was only 30 meters across. It wouldn't cause a major extinction event... but it will cause altered weather for some years due to the vast amounts of either dust or steam ejected into the atmosphere. my uneducated guess would be that approx. 1 mill. square kilometers would be directly effected by the impact, the following blastwave and debrie. Should it hit the ocean, you would see a scenario pretty similar to the current events in the Indian Ocean. Regarding the previous odds (1/67): in an astronomical context that is actually pretty much! The current odds are more normal "astronomical" odds.




NiteStryker

Biggest F-ing A-hole 2010

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24th April 2003

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#72 16 years ago
tusseAn object 400 meters in diameter doesn't just disintegrate upon impact with the atmosphere, no matter the angle! Only in case its a peice of comet, made mostly of ice, can such a thing occur. And that aint harmless either... 1903 Tunguska might contain clues as to what happens in that case. The meteorite that caused the crater in Arizona (1200 m dia.) was only 30 meters across. It wouldn't cause a major extinction event... but it will cause altered weather for some years due to the vast amounts of either dust or steam ejected into the atmosphere. my uneducated guess would be that approx. 1 mill. square kilometers would be directly effected by the impact, the following blastwave and debrie. Should it hit the ocean, you would see a scenario pretty similar to the current events in the Indian Ocean. Regarding the previous odds (1/67): in an astronomical context that is actually pretty much! The current odds are more normal "astronomical" odds.

I agree it would do damage,..but not on an extinction level event.

If it hit the ocean, i give a guess in terms of the US that the ocean could wash as far inland as the sierra nevada mountains on the west, and if on the east, all the way to the great lakes and the mississippi river.