[meteorite-list] Re Cu meteorite

From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Sat, 12 Jul 2008 13:16:50 -0700 (MST)
Message-ID: <56167.71.226.60.25.1215893810.squirrel_at_timber.lpl.arizona.edu>

Hi again:

I forgot the other article in the May, 2006 issue of Meteorite: Ice
Meteorites by John Saul which lists 200 years of ice falling from the sky.
I am assuming that the most of the early ones do not come from the leaking
toilets of planes. My mind remains open on this.

Larry


On Sat, July 12, 2008 11:36 am, Sterling K. Webb wrote:
> Hi, Darren, List,
>
>
> Good for you; you've landed on a controversy!
> The existence (or non-existence) of cryometeors
> and megacryometeors. The principal researcher of this topic is Jes?s
> Mart?nez-Fr?as, author of:
> http://tierra.rediris.es/publipapers/megacryometeors_ambio.pdf
>
>
> The record hailstone for the US is less than 8
> inches in diameter but in 1995 in Zhejiang, China, a block of ice roughly a
> meter on a side and weghing about a ton was witnessed to fall.
>
> Cratering events are recorded. Are any of them
> from "outer space"? Every cryometeor tested has had the isotopic signature
> (deuterium) of plain ol'
> earthly water...
>
> The question is: how the h*** does the atmosphere
> form and support a one-ton block of ice? No theory of the atmosphere even
> vauguely suggests any way...
>
> Oddly for such a large number of well-attested
> events, most internet science forums and astronomy sites routinely blow off
> questions about big chunks of ice falling from the sky as urban myths,
> more UFO fantasies, whacky ignorance...
>
> What? Rocks falling from the sky? Nonsense.
>
>
>
> Sterling K. Webb
> ------------------------------------------------------------------
> ----- Original Message -----
> From: "Darren Garrison" <cynapse at charter.net>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Saturday, July 12, 2008 12:58 PM
> Subject: Re: [meteorite-list] Re Cu meteorite
>
>
>
> On Sat, 12 Jul 2008 11:10:04 -0600, you wrote:
>
>
>> It turns out that even a big block of ice can survive passage through
>> the atmosphere. The outside ablates away, the interior never warms up.
>
> Any numbers on how big the block would have to be? How small the
> surviving piece could be? I'm thinking of some of those chunks of ice
> that fall from the sky some times. Most come from planes. Could some be
> cometary? ______________________________________________
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Received on Sat 12 Jul 2008 04:16:50 PM PDT