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2006XG1, another Torino 1 NEO (for now)
nprev
post Dec 26 2006, 10:17 PM
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Here's a Christmas present for us all...a 0.7 km NEO may make a 4200 km altitude Earth flyby on Halloween, 2041: http://neo.jpl.nasa.gov/risk/2006xg1.html


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A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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tty
post Dec 28 2006, 12:37 AM
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You definitely do NOT want to use any violent technique that might break an impactor up into small fragments. Remember that according to recent research the main killing mechanism of the Chicxulub impact was the vast cloud of dust-sized secondaries that deposited enough energy in the stratosphere to cause wordwide fires and fry unprotected organisms.

That, paradoxically, is one reason I think using nuclear charges would be safer than a series of "deep impacts". The shock wave from a directed-energy nuclear weapon set off some distance from an impactor would act more or less in parallell and equally on all parts of it and therefore run less risk of breaking up an "orbiting rubble pile".

Safest of all (but very slow) is of course "gravity tugs", which apply an equal force on each atom of an impactor.

tty
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- nprev   2006XG1   Dec 26 2006, 10:17 PM
- - volcanopele   hmm, I tried simulating this in Celestia, but even...   Dec 26 2006, 11:33 PM
|- - dilo   NeoDys gives only a close approach for another dat...   Dec 26 2006, 11:58 PM
- - nprev   Yeah, I'm sure that will be the case. I notice...   Dec 27 2006, 01:54 AM
|- - Bob Shaw   QUOTE (nprev @ Dec 27 2006, 01:54 AM) 190...   Dec 27 2006, 08:59 AM
||- - RJG   QUOTE (Bob Shaw @ Dec 27 2006, 08:59 AM) ...   Dec 27 2006, 06:50 PM
||- - tuvas   QUOTE (RJG @ Dec 27 2006, 11:50 AM) Can s...   Dec 27 2006, 06:57 PM
||- - RJG   Thanks Tuvas -sounds like lots of good reasons. Th...   Dec 27 2006, 07:09 PM
|- - tty   QUOTE (nprev @ Dec 27 2006, 02:54 AM) And...   Dec 27 2006, 06:23 PM
|- - nprev   QUOTE (tty @ Dec 27 2006, 10:23 AM) I agr...   Dec 27 2006, 07:22 PM
|- - JRehling   I wonder if a good long-term defense would be to t...   Dec 27 2006, 08:18 PM
|- - nprev   Interesting idea, JR, though I think trying for lu...   Dec 27 2006, 08:31 PM
|- - ugordan   QUOTE (JRehling @ Dec 27 2006, 09:18 PM) ...   Dec 27 2006, 09:22 PM
|- - Bob Shaw   QUOTE (ugordan @ Dec 27 2006, 09:22 PM) A...   Dec 27 2006, 09:32 PM
- - tuvas   There is a very good reason why both ideas (Crashi...   Dec 27 2006, 09:10 PM
- - tty   You definitely do NOT want to use any violent tech...   Dec 28 2006, 12:37 AM
|- - ugordan   QUOTE (tty @ Dec 28 2006, 01:37 AM) That,...   Dec 28 2006, 12:57 AM
|- - tty   QUOTE (ugordan @ Dec 28 2006, 01:57 AM) B...   Dec 28 2006, 02:02 PM
|- - tuvas   QUOTE (tty @ Dec 28 2006, 07:02 AM) It is...   Dec 28 2006, 11:12 PM
|- - nprev   QUOTE (tuvas @ Dec 28 2006, 03:12 PM) As ...   Dec 28 2006, 11:28 PM
|- - ugordan   QUOTE (tuvas @ Dec 29 2006, 12:12 AM) It ...   Dec 29 2006, 11:53 AM
|- - tuvas   QUOTE (ugordan @ Dec 29 2006, 04:53 AM) W...   Dec 29 2006, 02:00 PM
|- - ugordan   If you're referring to the Mach stem where the...   Dec 29 2006, 02:59 PM
- - nprev   Actually, I meant putting threatening bodies in ac...   Dec 28 2006, 04:14 AM
|- - dilo   Agree with you, nprev. Also considering that, in o...   Dec 28 2006, 06:26 AM
- - nprev   Thanks, Dilo. I think it's prudent to save the...   Dec 28 2006, 09:35 AM
- - nprev   Personally, I think it'll be a long, long time...   Dec 28 2006, 11:05 PM
- - Nyx   This is my first post, so welcome everybody!...   Jan 1 2007, 11:59 PM
- - nprev   I think the jury's still out, but there's ...   Jan 2 2007, 12:57 AM

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