[meteorite-list] Main Mass and stardust

From: AstronomicalResearchNetwork <arn1200_at_meteoritecentral.com>
Date: Fri Jan 20 01:16:06 2006
Message-ID: <022c01c61d88$fb022f60$0302a8c0_at_VAIO>

Hi Martin and list
        Just a thought , it took the recovery team almost 45 minutes
to find and get close to the capsule . With the surface temp at 30
degrees and some good winds it probably cooled down considerable
from moment of impact . Moment of impact might have been well
over 120 degrees I think .

Main mass Way back when I first wrote ARN's History of Meteorites
Main Mass was the largest single specimen from a meteorite find or fall .
Not the largest specimen after it had been cut up after being cut up all you
might
have is half or a fourth or whatever is left of the Main Mass .
There is only one main mass to a "Fall" . "Fall" all the specimens that hit
the
ground as a single EVENT from the same original origin in space .
No matter how many "NWA" or "DAG" etc etc. names are given to this Event
there is only one main mass.
In my mind where the society has really lost it giving separate numbers
to the same "Fall" (event) of meteorites .

Don't miss my new book coming soon .
ARN's Guidelines to Meteorite Classification
    Thank for your time .....Ken Regelman
Astronomical Research Network
http://www.meteorites4sale.net/



Hi All,

Yesterday I asked Don Brownlee about the sample return capsule
compared to a meteorite, and he thinks some meteorites arrive on earth
warm or hot to the touch, although admitting there is an amount of
folklore in the old stories.

However the Stardust SRC was not hot, nor even warm when it was
recovered in Utah. Today I checked with Karen McNamara, the curation
engineer who was one of the first onsight at the capsule's recovery
and she told me that the surface temperature of the capsule taken with
an infrared gun at the time of recovery was only 30 degrees F, about
the same as the air.

More food for thought. Or not.

Martin

PS: Hey Adam- Don showed me a pic on his computer of the huge moon
and mars rocks you showed them at your meeting. Pretty cool, and
pretty impressive.



On 1/19/06, sterling_k_webb_at_sbcglobal.net <sterling_k_webb@sbcglobal.net>
wrote:
> Hi, Abestos Hands!
>
> Yes, one can lightly, or gently, or for a short
> period, handle a 60?C - 140?F object, but the
> threshhold for cell death is 134?F if maintained
> for more than a very short time. Burns will not
> occur, but cells (dermal and deeper tissues) will
> die.
> One reason humans can briefly handle very
> hot objects is the protection provided by the
> evaporation of skin moisture which momentarily
> insulates the skin. When that fails the heat must
> penetrate the epidermis (dead cells anyway).
> Your know you've gone as far as you can go
> when, after touching a hot object, your skin is dry
> and sheds a white dust (burnt epidermis).
> To carry a heavy (and precious) object like the
> capsule at 140?F without haste or the last-minute
> loosening of grip requires protection. Not much,
> but some: Nomex gloves are more than enough
> (widely sold for $12 a pair under the moniker
> "the Ove-Glove").
>
> Sterling K. Webb
> ------------------------------------------------
>
> ----- Original Message -----
> From: "Martin Altmann" <altmann_at_meteorite-martin.de>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Wednesday, January 18, 2006 10:25 AM
> Subject: Re: [meteorite-list] Stardust SRC Hot to the touch?
>
>
> > Unbelievable!
> >
> > I recommend to train upcoming NASA-reentry-capsule-recoverers in a
> > special
> > program.
> > To proof cost efficency, I'll could develope such a program for only
> > 120.000bucks.
> > The program is:
> > Come on, little princes and pashas, 60?C - 140F,
> > protective gloves???! What about you helping a little at home in the
> > household?
> > I stongly recommend dish washing.
> > Girly NASA: 60? - I can touch it without problems.
> >
> > Martin,
> > the housewife.
> >
> >
> > ----- Original Message -----
> > From: "Martin Horejsi" <accretiondesk_at_gmail.com>
> > To: "Meteorite Mailing List" <meteorite-list_at_meteoritecentral.com>
> > Sent: Wednesday, January 18, 2006 2:39 PM
> > Subject: [meteorite-list] Stardust SRC Hot to the touch?
> >
> >
> > Hi Ron and All,
> >
> > I am wondering why the Stardust SRC might arrive to earth too hot to
> > touch, yet the mantra for meteorites is they must be cold even though
> > history is littered with witnesses claiming the stones and irons were,
> > you guessed it, too hot to touch.
> >
> > Here is an excerpt from the Stardust press kit, page: 14-15:
> >
> > Following a normal entry, the capsule will be hand-carried to the
> > helicopter for trans-
> > port. The capsule will be warm; temperature of the heat shield could
> > be as high as 60 Celsius (140 Fahrenheit), so handlers will be
> > required to wear protective gloves.
> >
> > Cheers,
> >
> > Martin
> > ______________________________________________
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> >
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> >
>
>
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Received on Fri 20 Jan 2006 01:15:58 AM PST