[meteorite-list] Fusion Crusted "Meteoroids"

From: cdtucson at cox.net <cdtucson_at_meteoritecentral.com>
Date: Wed, 25 Mar 2009 16:39:21 -0400
Message-ID: <20090325163921.NZXBO.580247.imail_at_fed1rmwml46>

CHRIS , WITH ALL DUE RESPECT HERE;
---- Chris Peterson <clp at alumni.caltech.edu> wrote:
> There are not many potential crust forming bodies- a few dozen at most.
TO ME A FEW SOUNDS LIKE A GUESS!
> Neither is there a lot of meteoroid material whizzing around. Meteoroids
> come from two populations: comets and the asteroid belt.
ARE YOU AWARE WE HAVE METEORITES THAT WE THINK MIGHT BE FROM PLANETS AS WELL. MAYBE WE WILL EVEN BE ABLE SOME DAY TO FIND THEN FROM OTHER PLANETS. DO YOU NOT AGREE WITH THE PLANETARY VARIETY?
Earth-crossing
> cometary material is short lived, decaying into the Sun in just thousands of
> years (and in general, very little of this is likely to survive a grazing
> encounter with the Earth).
IT IS A FACT THAT WE HAVE YET TO RECOGNIZE MATERIAL FROM COMETS ON EARTH BUT MANY PEOPLE SUSPECT THAT SOMEDAY WE WILL. OTHERS BELIEVE THAT CI1'S MAY BE COMETARY. AND THEY ARE VERY OLD INDEED AS OLD AS THE REST.
 Material in the asteroid belt generally stays
> there.
 TELL THAT TO THE DUDE THAT DUG METEOR CRATER.
 A tiny fraction is occasionally perturbed out and into an Earth
> crossing orbit (or an orbit crossing another body with an atmosphere). IS THAT WHY WE GOT JUST HOURS NOTICE ABOUT A NEAR MISS JUST THE OTHER DAY? IT SEEMS WE DON'T KNOW AS MUCH AS YOU THINK BASED ON TOO MANY NEAR MISSES. Any
> such meteoroids will largely be in orbits without any long term stability,
> so again, they aren't likely to persist more than a few million years.
IMAGINE WHAT YOU GET DONE IN A SINGLE DAY. NOW IMAGINE YOU HAD MILLIONS OF YEARS. A MILLION YEARS IS A HUGE AMOUNT OF TIME EVEN FOR GATHERING DUST, OOPS I MEAN CRUST.
>
> I disagree completely with your assessment that our scientific knowledge
> about meteoroids and meteorites is based on guesses.
I CERTAINLY DON'T MEAN ALL BUT A LOT IS STILL SOME.
Understanding of
> meteoroid dynamics and of meteorite formation and chemistry is solidly based
> on theory which is supported by a great deal of observational evidence.
> There's really no "guessing" involved.
GUESSING IS STILL GUESSING. GUESSES ARE PROVEN WRONG EVERY DAY. LOOK AT CARANCAS, THE DRY MOON, NOT. LOOK AT ALL OF THE MATERIAL THAT HAS HAD TO BE RE-CLASSIFIED. TOO MUCH GUESSING AND NOT ENOUGH GOOD SCIENCE.
CARL
>
> Chris
>
> *****************************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> ----- Original Message -----
> From: <cdtucson at cox.net>
> To: <meteorite-list at meteoritecentral.com>; "Meteorites USA"
> <eric at meteoritesusa.com>
> Sent: Wednesday, March 25, 2009 12:39 PM
> Subject: Re: [meteorite-list] Fusion Crusted "Meteoroids"
>
>
> > http://www.foxnews.com/story/0,2933,272212,00.html
> >
> > Eric
> > thank you. This is a point I tried to make a week or so ago. Someone
> > commented that there is a lot of guessing??? That is the understatement of
> > the year. Most of our scientific knowledge in this hobby is based on
> > Guesses. We simply have no way of knowing a lot of this info with
> > certainty.
> > I have yet to see a scientist voice an opinion here. They know better.
> > The truth is that we have no idea how much meteoritic material that ends
> > up on Earth had fusion crust prior to entering our atmosphere. Further
> > when you look up into space there are a gazzillion sources of crust
> > producing bodies. Hello, Look up! And look at the age of most meteorites.
> > It seem to me 4.56 billion years gives these space travelers plenty of
> > time to have visited enough places to pick up fusion crusts here and
> > there. Look at odds. "Even a blind squirrel gets a nut once in a while."
> > I earlier went on to theorize that perhaps this pre-fusion crust might
> > actually help protect the material and up the odds of a safe landing here
> > on earth. ( Yes it becomes a heat shield and helps protect the material
> > at least enough to salvage some of the material.) This only makes sense
> > because we all know that some finds and falls simple have NO crust at all.
> > There is not a scientist on this list that can say with certainty why that
> > is. Yes they can guess but not all meteorites have crust and most of the
> > ones that do not will simply never be recognized. How could they be?
> > scientists won't look at stuff that does not have crust. They say stuff
> > like" it looks Terrestrial" ! Duh!! A lot of rocks from space do look
> > terrestrial. In large a stupid thing to say, I think! And If it also
> > looks like a meteorite, it at least needs to be looked at. I will qualify
> > that statement by saying , if it were found by a real hunter who knows
> > what he is doing and finds the thing in an out-of-place location. It
> > deserves to be at least looked at. How else will we ever find anything
> > unusual or from Venus or Mercury or even Earth meteorites???
> > Even stuff that falls through a roof like in NJ recently they never
> > bothered to publish what the actual material was. They just called it
> > space junk. What is that? Isn't our time worth figuring out where the
> > space junk came from. USA, Russia, Timbuktu? We should know. This is
> > important info with regard to all of the space junk floating around up
> > there. Worth a study to find out why a solid chunk of metal would hit a
> > roof. What made it so solid. Did it start out as sheet metal or was it a
> > part from an engine? This NJ junk should be studied and the results
> > published. This might help us figure out the mechanics of junk in space or
> > whatever!. Science just blew it off. Great move science.
> > Carl Esparza
> > IMCA 5829
> > Meteoritemax
>
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Received on Wed 25 Mar 2009 04:39:21 PM PDT