Listees,
Yes to cut a wonderful oriented meteorite hurts. But also the interior
of such a space rock is important: to cut a very nice full slice into
some part slices will destroy a nice collection piece also, especially
if the part slices don't show all features, which were represented by
the
Hello,
only 3 days left for the 20% off* any prices on my
website. Be quick, you have until december 31st, 2007
at midnight !
Still for sale, some rarities like Agen (France),
Kernouve (France), Ensisheim (France) and cool pieces
like NWA 2965 (EL3), nice small Gao's.
The link to my website
http://www.rocksfromspace.org/December_28_2007.html
**See AOL's top rated recipes
(http://food.aol.com/top-rated-recipes?NCID=aoltop000304)
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Hi Mike -
It looks to me like the various parties in Tucson (not
you and the other dealers) are trying to milk this
event for all its worth, and will end up killing the
goose that laid the golden egg.
Given the suite rents, IMO, the dealers are being
reduced to break even on the event. Their
Hi All,
Have any dates been settled for Tucson meteorite events?
The party? The auction(s)? The focus of meteoric activities?
I'm trying to work in a visit along with a heavy teaching schedule.
I'm sure others are trying to make plans too...
Best wishes to all...
Nick
Hi Nick,
Here is the information we have so far.
http://www.meteorite-times.com/tucson/
Everyone can submit their information on this form.
http://www.meteorite-times.com/tucson/Tucson_form.htm
Thank you,
Paul
Nicholas Gessler wrote:
Hi All,
Have any dates been settled for Tucson
Hi all -
Over the last several days, I've cited several C14
spikes associated with hyper-velocity impacts.
It turns out that photons can release neutrons and
protons from a nucleus:
http://galileo.phys.virginia.edu/classes/252/Nuclear_Notes/nuclear_notes.html
To give you idea of the energies
All it takes to knock neutrons out of a nucleus is energy, so of course
photons can do this. But in general (for the sort of common elements we
find in meteoroids) it takes a _lot_ of energy. You need photons with
gamma ray energies (which is also what the reference you list says).
Gamma ray
Hi Ed, Chris,
I also posted a reply to this along the lines Chris did, but it didn't show
up. Ed, I am gathering from Chris' conclusions from your post that you've
mixed up visible light with gamma rays as sources of neutrons because they
are both radiation?
Best wishes,
Doug
my original
http://neo.jpl.nasa.gov/news/news153.html
Mars Impact Probability Increases to 4 Percent
Don Yeomans, Paul Chodas and Steve Chesley
NASA/JPL Near-Earth Object Program Office
December 28, 2007
The impact probability for a collision of asteroid 2007 WD5 with Mars on
January 30 has increased from
Go asteroid :)
The impact probability for a collision of asteroid 2007 WD5 with Mars on
January 30 has increased from 1.3% to 3.9%.
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On Fri, 28 Dec 2007 14:09:36 -0600, you wrote:
the Hulk comic character! I am the first to respect a thought experiment:
But what scientific experiment could you propose (or has one already been
done?) to follow through?
Okay, I've done a bit of thought experiment on this too-- and bear with me
Hi, Darren, List,
The natural abundance of Carbon 14 on Earth is
one part per trillion or 10^-9. Your example, which
produces an atmosphere with a C14 abundance of
1.51x10^-9, is a 50% enrichment of the natural terrestrial
abundance, which would be a whopping big spike in
the curve.
http://www.improbable.com/magazine
Or maybe not so OT lately...
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http://tunguska.sai.msu.ru/
International Conference
100 years since Tunguska phenomenon: Past, present and future
June 26-28, 2008.
Moscow, Russia
The Conference is organized by
* Russian Academy of Sciences - Institute for Dynamics of Geospheres
* Lomonosov Moscow State
Dear List Members,
I have several outstanding auctions ending over the
next few days including a COMPLETE LUNAR SLICE started
at JUST 99 cents with NO RESERVE. Please note that
the VERY FIRST and VERY LAST SERIALIZED Campo Coins
are up for auction and started at just 99 cents with
no reserve!
MARS RECONNAISSANCE ORBITER HIRISE IMAGES
December 26, 2007
o Repeated Erosion and Deposition in the South Polar Layered Deposits
http://hirise.lpl.arizona.edu/PSP_005788_1035
o Crater on the South Polar Layered Deposits
http://hirise.lpl.arizona.edu/PSP_005748_1075
o Distorted Layers in
MARS ODYSSEY THEMIS IMAGES
December 24-28, 2007
o Lava Flows (Released 24 December 2007)
http://themis.asu.edu/zoom-20071224a
o Polar Outliers (Released 25 December 2007)
http://themis.asu.edu/zoom-20071225a
o Landslides (Released 26 December 2007)
http://themis.asu.edu/zoom-20071226a
o
http://www.ktvz.com/Global/story.asp?S=7540645
Fireball has hunters on the trail of meteor's tail
By Barney Lerten and Victoria Adelus
KTVZ.COM
Decmeber 24, 2007
Updated: December 27, 2007
A blazing fireball plummeting toward Earth was seen over a wide area of
Central Oregon, Northern
Hi, EP, Chris, Doug, Darren, and
Anyone still dipping into the Mammoth Stewpot,
Doug, I don't believe EP is claiming for a minute
that radiation killed any critters, much less extincted
a species, only that digressions in the isotope record
seem to correlate with extinctions and impacts. He
Hi Ingo all,
Everyone has raised some very good and interesting points. I for one cannot
stand to see a beautiful oriented meteorite cut or a window ground. But I
also understand that occasionally there are exceptions. And I mean
OCCASSIONALLY! ;-)
I have a complete slice of NWA 2705 which was
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