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Lady of the Land

Registered: 05-2003
Location: Germany
Posts: 6984
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Meteorite Impact on Earth - Video


No, I'm not talking about the board merger. I'm talking about a Japanese video on YouTube, about a meteorite impact on Earth. A big one, that is.

"Meteorite Collision" EN sub

Warning: It's the kind of stuff for nightmares. emoticon

Last edited by Firlefanz, 2/7/2012, 9:10 am


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9/18/2007, 6:25 pm Link to this post Email Firlefanz   PM Firlefanz Blog
 
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Shepherd

Registered: 03-2006
Posts: 2138
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Re: An end or a new beginning?


The meteorites size is roughly equivalent to the asteroid fields 5th largest object, Juno. Just to you know, help to get a bit of perspective on the chance of this happening, not very much luckily, we obviously know of all the super large objects nearby Earth.
9/18/2007, 6:52 pm Link to this post Email QS2   PM QS2
 
Firlefanz Profile
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Lady of the Land

Registered: 05-2003
Location: Germany
Posts: 6984
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Re: An end or a new beginning?


Yes, the chances of this actually happening now are fairly small. Yet I never knew about this superheated, vaporized rock that would engulf a whole planet.

It's certainly apocalyptic stuff.

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9/18/2007, 6:55 pm Link to this post Email Firlefanz   PM Firlefanz Blog
 
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Shepherd

Registered: 03-2006
Posts: 2138
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Re: An end or a new beginning?


We've seen it on smaller scales before, kind of. It's like the pyroclastic flow in a way that you see with nuclear weapons and volcanic eruptions sometimes. Except at a massively larger scale with much worse effects are far longer lasting. emoticon
9/18/2007, 7:04 pm Link to this post Email QS2   PM QS2
 
Michael58 Profile
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Apprentice

Registered: 09-2007
Posts: 48
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Re: An end or a new beginning?


Wait a minute, I thought that we really don't know all the objects that might be headed this way? I read too many articles and seen too many Discovery programs that all agree there's too much sky to monitor and that we really need to step up the program.

Oh, you said "superlarge." Maybe that makes a difference...

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Tower of Light Fantasy
10/19/2007, 8:59 pm Link to this post Email Michael58   PM Michael58
 
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Shepherd

Registered: 03-2006
Posts: 2138
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Re: An end or a new beginning?


Yes, super large, as in several hundred kilometers diameter, luckily we know all the nearby ones that are that big, I believe there are 3-4 in the asteroid belt of the size, Ceres, Juno, Pallas and one other I think..., the name escapes me I'm afraid.

Sadly we don't know all the smaller ones in the 10s of kilometers range and below quite yet though. And there only a small amount of money is going to this work is slow. We'll eventually categorize most of the larger then 1 kilometer rocks I believe at our current rates in the next 10-20 years hopefully, even a rock of a few hundred meters would literally level a good part of a continent. emoticon

(I'm not sure what the lower mandated size was that NASA had to find, it was I think something like 1 kilometer, but I can't say for sure, maybe it is 2 km instead...)
10/19/2007, 10:21 pm Link to this post Email QS2   PM QS2
 
Michael58 Profile
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Apprentice

Registered: 09-2007
Posts: 48
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Re: An end or a new beginning?


Interesting, and, yes, pretty scary too. If an impact of that size does lead to "a new beginning," it probably won't be for us!

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Tower of Light Fantasy
10/20/2007, 12:43 am Link to this post Email Michael58   PM Michael58
 
Reythia Profile
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Knight of Honor

Registered: 11-2005
Posts: 1883
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Re: An end or a new beginning?


Apophis, QS? I don't remember its size, but that was the last "big scare" asteroid that scientists were worried about. (They then collected more data and re-did their estimation, and found there was nothing to worry about.)

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  -- YAR!
10/20/2007, 5:10 am Link to this post Email Reythia   PM Reythia AIM MSN
 
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Shepherd

Registered: 03-2006
Posts: 2138
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Re: An end or a new beginning?


No, Apophis is a 400 meter rock, so it isn't one of the super large asteroids, instead it is I believe a NEO (Near Earth Orbit) type asteroid. At 400 meters if it hit earth you'd wipe out a good part of a continent and while further tracking did definitively rule out the first collision, they have I believe still failed to rule out completely a later one around 2036 I think, though the chances for it are very low indeed somewhere around 1 in a million I think.

Anyway, our tracking for such small objects is massively insufficient and we wouldn't even necessarily see it coming before it hit us, if there is one out to hit us.
10/20/2007, 4:09 pm Link to this post Email QS2   PM QS2
 


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