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View Full Version : Video-simulation of a meteorite impacting the Earth



Glynd Eastŵd
Saturday, June 17th, 2006, 05:51 PM
A shame the narrative is in Japanese, but the visual side of things are so strong you get the gist of what's happening.

http://www.youtube.com/watch?v=3JHdYBet_4Q
Video source. (http://www.youtube.com/watch?v=3JHdYBet_4Q)

Scholar
Monday, June 19th, 2006, 02:53 AM
Um yeah, that would suck big time...

Galaico
Sunday, June 25th, 2006, 11:34 AM
Wow! Very impressing. But that must have been a super-giant meteorite, much bigger than the one that extingiushed the dinosaurs.

Anyone knows if we actually have some kind of technology to prevent this? or all that is just Hollywood crap?

Glynd Eastŵd
Sunday, June 25th, 2006, 06:24 PM
Wow! Very impressing. But that must have been a super-giant meteorite, much bigger than the one that extingiushed the dinosaurs.
Yes, I think the one which made the dinosaurs extinct was tiny compared to that. It would be extremely unlikely that a meteor of that size would strike the Earth.


Anyone knows if we actually have some kind of technology to prevent this? or all that is just Hollywood crap?
I think that films such as Deep Impact and Armageddon give the wrong impression. There's no way you'd be able to land a team of men on the surface. Although I saw one documentary which said Earth's best defence would be to fire several nukes at the side of the meteor when it is still quite some distance away, so that it would gradually divert the meteor's course away from the planet. But all we can do at the moment is speculate.

SubGnostic
Friday, August 11th, 2006, 05:00 PM
The misanthropist in me rejoices. :yippee
If we don't nuke, eat, drink, smoke or poison ourselves to death it will be eventually this or the dying sun that will get rid of us. Great video clip.

Amorsite
Friday, August 11th, 2006, 05:04 PM
A shame the narrative is in Japanese, but the visual side of things are so strong you get the gist of what's happening.

http://www.youtube.com/watch?v=3JHdYBet_4Q
Video source. (http://www.youtube.com/watch?v=3JHdYBet_4Q)
A part of it Reminds me of Warcraft 3 Reign of Chaos, lets hope that meteor hits soon already.

Wolfssangel
Monday, August 28th, 2006, 07:44 PM
Giant meteorite is strong with thousands of Hirsohima bombs. More than the people died.

I remembered I read my book about before 65 million years ago, the asteroid or comet killed 70% of dinosaurs.

Asteroids and comets are very dangerous of killer meteorites.



My vaderland is my Boerevolk,
WolfSSangel

Orlon
Saturday, September 23rd, 2006, 07:38 PM
The cheerfull voice of the (japanese?) narrator is hillarious, if this is this: http://www.youtube.com/watch?v=D1kREdyfJ68 video.

A little confort: There are very few bodies in the solar system big enough to wipe all life of this planet, and most of them are in comparatively stable orbits around the sun. To heat the atmosphere enough to sterilize earth the thing would have to be massive, 100km+ diameter. Collisions on that scale has likely NEVER happened after the formation of the moon.

The size of the atmosphere is immense, averaging about ten tons per square meters, or something in the order of 5,1*10^18 kilograms. With a heat capacity of roughly 1KJ/kg*K that gives us 5,1*10^21 J just to heat the atmosphere one degree. If the speed of the asteroid is 30km/s, the energy needed would take a 11 billion ton asteroid, thats somewhere between 3-4 cubic kilometres. The hydrosphere is a different matter entirely, being hundreds of times heavier and having a higher heat-capacity, but on the other hand Im not speaking korean/japanese and cant see if the clip mentions if direct impact-heat or the outgassing is supposed to lead to the oceans boiling off.

To stop asteroid heading our way we could bomb the things with nukes, the resulting push gradually leading to a different orbit that does not lead to a kaboom. But a big one would take one hell of a nuke!