[meteorite-list] Re Cu meteorite

[lebofsky at 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 Jesús

> Martínez-Frías, 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

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