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Location: UFOUpDatesList.Com > 2007 > Dec > Dec 14

Re: Great Beasts Peppered From Space

From: Michael Tarbell <mtarbell.nul>
Date: Fri, 14 Dec 2007 15:05:18 -0700
Archived: Fri, 14 Dec 2007 21:12:19 -0500
Subject: Re: Great Beasts Peppered From Space

>From: Diana Cammack <cammack.nul>
>To: <ufoupdates.nul>
>Date: Wed, 12 Dec 2007 18:55:32 -0000
>Subject: Space debris, 35,000 yr old.

>Source: BBC - London, UK


>Tuesday, 11 December 2007

>Great Beasts Peppered From Space
>By Jonathan Amos
>Science reporter, BBC News, San Francisco


>"We think that there was probably an impact which exploded in
>the air that sent these particles flying into the animals," said
>Richard Firestone from the Lawrence Berkeley National


>The mammoth and bison remains all display small (about 2-3mm in
>size) perforations.

>Raised, burnt surface rings trace the point of entry of high-
>velocity projectiles; and the punctures are on only one side,
>consistent with a blast coming from a single direction.

>Viewed under an electron microscope, the embedded fragments
>appear to have exploded inside the tusk and bone, say the
>researchers. Shards have cut little channels.

>The sunken pieces are also magnetic, and tests show them to have
>a high iron-nickel content, but to be depleted in titanium.

A bit off the UFO topic, but I must point out that this
"peppered-by-meteoric-buckshot" hypothesis seems quite
untenable, at least as described in this article.

Let us suppose that, in order to penetrate bone, the projectile
speed at impact would have to be at least 50 m/sec. Further
assume that each projectile is a randomly oriented iron cube,
with a mean presented area equivalent to that of a 2mm diameter
hole (yielding an edge length of ~1.4mm and mass ~24 mg).

Aerodynamic drag effects will slow the projectiles exponentially
with distance traveled in air. It is straightforward to show
that the 'upstream' speed of such low-mass projectiles would
have to be _enormous_ in order to obtain the required impact
speed... many 10's of km/sec at an upstream range of ~100
meters. But the projectile would quickly burn up at such speeds,
and hence never arrive at the impact point.

Considering more realistic (higher drag) projectile shapes -
 akin to typical bomb casing fragments - would make the speed
requirements even more extreme.

If in fact impact damage is what is being observed in these
tusks and bones, the above considerations suggest that these
animals were in fairly close proximity to the source of


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