Re: [meteorite-list] Magnet canes are evil

2010-08-25 Thread Mark Ford
Yeah keep using magnets leave me all the lunars muhahahahaha.

Satan


-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of
Galactic Stone & Ironworks
Sent: 24 August 2010 19:44
To: Matson, Robert D.
Cc: Meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Magnet canes are evil

Hi List,

The evilness of magnet canes is well known throughout history.  In
fact, Satan uses a 3-pronged magnet cane that is often mistaken for a
pitchfork.  An old 14th century woodcut in the tome "Of Meteors and
Devils" (trans), a depiction of Satan is clearing seen and about his
feet are several imps who are pulling bits from the end of his magnet
cane and dancing about with them.  ;)

Best regards,

MikeG


On 8/24/10, Matson, Robert D.  wrote:
> Mark wrote:
>
>> As soon as everyone stops using metal detectors and magnet canes
>> to look for meteorites then the first Lunars in Europe or USA
>> will eventually be found,  until then!
>
> I have never used a magnet cane, nor will I ever, and I always
> advise new hunters against their use. A magnet cane is basically
> an H-, L-, iron, and stony-iron filter. I sometimes carry an LL6
> with me to the desert on the off-chance I'll run into someone using
> a magnet cane. That usually "cures" them. ;-)
>
> --Rob
> __
> Visit the Archives at
> http://www.meteoritecentral.com/mailing-list-archives.html
> Meteorite-list mailing list
> Meteorite-list@meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>


-- 

Mike Gilmer - Galactic Stone & Ironworks Meteorites
http://www.galactic-stone.com
http://www.facebook.com/galacticstone

__
Visit the Archives at
http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

CONFIDENTIALITY NOTICE: 

This email and any files transmitted with it are confidential. If you are not 
the intended recipient, please notify us. Email i...@ssl.gb.com. You should not 
copy or use this email or attachment(s) for any purpose nor disclose their 
contents to any other person. 

GENERAL STATEMENT:

Southern Scientific Ltd's computer systems may be monitored and communications 
carried on them recorded, to secure the effective operation of the system and 
for other lawful purposes.

Registered address Rectory Farm Rd, Sompting, Lancing, W Sussex BN15 0DP. 
Company No 1800317


__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] new Barratta thin-section pix at http://www.qmig.net/thinsection

2010-08-25 Thread Bob WALKER
Listoids

As promised - I have had a new thin-section of Barratta made... you may
recall that the earlier museum slide I borrowed was very old and
discoloured and difficult to focus because of uneven-ness of the slide...

Barratta has a special place in my heart - for those of youse who don't
know it was the first meteorite found by the Europwean settlers in
Australia and thus arguably a must-have specimen in any historic or other
collection

So - new thin-section pix of Barratta at http://www.qmig.net/barratta2

Index for the thin-section project at http://www.qmig.net/thinsection

You'll notice I've only uploaded images of Barratta at 20x and 50x - more
at 100x and 200x next week

And some more update/s with some spectacular slides next week - I won't
let the cat out of the bag and tell you which ones just yet

My thanx to the few very few who have loaned a couple of thin-sections and
specimens - if you can assist the thin-section project by loaning any
interesting or pretty slides please contact me off-list

Best
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Flattest Complete Meteorite

2010-08-25 Thread Marcin Cimala

Hi
Its maybe not the thinnest meteorite specimen, but in compare to its size 
(width and height), its very flat and looks strange. And its oriented with 
rollover lipping from one side :D


Gao
46g
54x41x11 mm

http://www.meteoryt.net/ebay/gao-guenie_46g.jpg

-[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]-
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com   marcin(at)polandmet.com
http://www.Gao-Guenie.com  GSM: +48 (793) 567667
[ Member of Polish Meteoritical Society ]

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] AD: 15 specimens have been greatly reduced For Quick Sale!

2010-08-25 Thread michael cottingham


Hello,
Sorry for breaking the rules, but I need to get this out before my field time 
starts. 
You will have to look through my pages to find all The SPECIAL OF THE WEEK 
listings, but here are a few to be made aware of.


ALL OF THESE HAVE BEEN REDUCED!
Whetstone Mountain- This is your chance. I WILL NOT GO LOWER ON THIS SPECIMEN.  
This one is slated for cutting if it does not sell and I will make more $$$ by 
cutting. Please save this lovely and rare specimen from my mean 
saw!http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=220622427962
Gebel Kamil- There is not another endcut, this nice, this large and this cheap 
for 
sale-anywhere!http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=200508419967
Wisconsin Individual! Come on...besides my specimens, when has been the last 
time you have seen an individual for sale...especially this low? There have NOT 
been anymore offered...they are essentially all 
gone. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=200502538250 
Peekskill...Lower than the going 
rate!http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=200487651316
LARGE- Howardite 
slice.http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190379397262
AND MANY OTHERS.

SEE ALL ITEMS ON SALE IN MY STORE!
http://stores.ebay.com/voyage-botanica-natural-history

THANKS AND BEST WISHES
MICHAEL COTTINGHAM
  
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Dr Terry Schmidt

2010-08-25 Thread Chris Spratt

Hello list,

Can someone with a great memory tell me when Dr. Terry Schmidt of  
Colorado Springs, passed away.


Thanks,

Chris Spratt
Victoria, BC
(Via my iPhone)
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Private involvement helping science

2010-08-25 Thread Galactic Stone & Ironworks
Hi List,

I don't want to re-open the debate between science and laymen over the
involvement of private meteorite hunters.  But I think something
should be pointed out in regards to the recent development about the
age of the solar system (story linked below).  This story is a perfect
example of how private involvement can benefit meteoritics and science
as a whole.  This NWA meteorite has yielded some potentially-valuable
data, and the stone was made available by private nomad hunters and
private collector/dealers.  Without private involvement, this
meteorite would still be laying undiscovered in the desert and
possibly buried forever by the marching dunes, or left to suffer the
fate of terrestrialization as a part of desert pavement.  It's a fun
and positive thing that laymen can become involved in science in an
indirect way that produces real results.  And this is also another
example of how find coordinates for some meteorites is secondary to
more important secrets the specimens hold.  In this particular case,
the find coordinates are not fundamental to the discovery.

http://www.scientificamerican.com/blog/post.cfm?id=meteorite-nugget-pushes-back-age-of-2010-08-23

Best regards,

MikeG


-- 

Mike Gilmer - Galactic Stone & Ironworks Meteorites
http://www.galactic-stone.com
http://www.facebook.com/galacticstone

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] L3 Bullet and a nice 333g NWA XXX for sale!

2010-08-25 Thread David Goettlich
Hey List,

I have 2 nice meteorite for sale.

The first one is a 333g NWA XXX. It is a very nice piece with a light oriented 
shape. The specail thing is that at 2 sides the piece has crazy glossy crust 
like you know that from Achondrites.

The 2. piece is a very special piece. It is a 40g L3 Bullet (NWA 5507). It is 
very fresh (W1) and has nice flowlines on the crust. There is also a Lipping on 
the piece .So it is a very very nice oriented L3. Maybe one of the best L3 Mets 
in the world. A great piece for every collection .For sure it is the best 
oriented L3 I ever saw.

So if you are interested please contact me out of list.
Pic´s also via e-mail!!!

Cheers David
___
WEB.DE DSL SOMMER-SPECIAL: Surf & Phone Flat 16.000 für 
nur 19,99 ¿/mtl.!* http://web.de/DSL-Doppel-Flatrate/
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Flattest Complete Meteorite

2010-08-25 Thread Steve Dunklee
I have an NWA4777 that is a nearly 4.5 cm round and about a half cm thick at 34 
grams and a tringular NWA869 of 95 grams that is 6.5 cm on its longest side and 
wedge shaped 2cm at its thickest point but totally flat on its largest area. A 
cross between a piece of pie and a doorstop. If tektites count i have a 3cm 
rough triangle 2mm thick. And one patty 8cm round and less than 1cm thick. 
Cheers Steve


  

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Historical sources

2010-08-25 Thread Monika Kumlehn de Mamani

> >
> >
> >
> >
> >
> > > From: gian...@hotmail.com
> > > To: meteorite-list@meteoritecentral.com
> > > Subject: ¿ Flatest complete meteorite ?
> > > Date: Sun, 11 Jul 2010 00:31:16 +
> > >
> > >
> > >
> > > Hola to all. Wondering about this¿ How is the flatest, complete (
> or almost complete ) crusted ( or sand blasted ) meteorite individual that
> any of this list fanaticos.have ever had in their hands ?We know
> the many odd shapes meteorites havehearted, with holes, and many
> more.any reply with a picture, is welcome.it is really amazing that a
> money coin shaped meteorite, could be found...due to the ablation process.
> > >
> > > Hasta la vista,
> > >
> > > larense
> > > _
> > >
> > __
> > Visit the Archives at
> http://www.meteoritecentral.com/mailing-list-archives.html
> > Meteorite-list mailing list
> > Meteorite-list@meteoritecentral.com
> > http://six.pairlist.net/mailman/listinfo/meteorite-list 
> >   
> __
> Visit the Archives at
> http://www.meteoritecentral.com/mailing-list-archives.html
> Meteorite-list mailing list
> Meteorite-list@meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list

-- 
GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Historical sources

2010-08-25 Thread Monika Kumlehn de Mamani
Monika Kumlehn de Mamani & Ingrid Grambow

In our bibliography we have added 955 historical sources covering the time from 
1443 BC to 1825 AD. We hope it is of interest for those working on historical 
aspects of meteoritics. In case there is any interest we will extend it also to 
further decades.
You will have access to our bibliography as follows:
http://www.impaktnamen.de >
startseite: left column: files EQ0.DOC-EZ.DOC >
Sources arranged alphabetically EQA.DOC to EQZ.DOC.


-- 
GMX DSL SOMMER-SPECIAL: Surf & Phone Flat 16.000 für nur 19,99 ¿/mtl.!*
http://portal.gmx.net/de/go/dsl
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Private involvement helping science

2010-08-25 Thread Steve Dunklee
Nice post Mike! Governments and religious leaders all over history have slowed 
down tru science. The earth was once the center of the universe. And a patent 
clerk not funded by any government? We all know the rest of that story. It 
takes a lot of years for the "wacko" Theorys to finally be accepted and proven. 
Radionucleotides and exobacteria are good examples. Dating by lead lead ratios 
is acepted as fact by the flat earthers. And evidence of viruses and bacteria 
in meteorites is considered heresy. With radio telescopes and the hubble 
reaching out 300billion years into the past isnt it a little nieve to give 
dating based on radiation? A good analogy would be a public restroom with 3 
stalls. The nearest stall would see the most use and the most flushes. If you 
put a counter on each stall and recorded how many flushes each toilet had could 
you say the farthest stall was younger because it had less flushes? Its the 
same thing with using half lives to
 calculate ages. It gives us usefull info but? Cheers Steve

On Wed Aug 25th, 2010 11:50 AM EDT Galactic Stone & Ironworks wrote:

>Hi List,
>
>I don't want to re-open the debate between science and laymen over the
>involvement of private meteorite hunters.  But I think something
>should be pointed out in regards to the recent development about the
>age of the solar system (story linked below).  This story is a perfect
>example of how private involvement can benefit meteoritics and science
>as a whole.  This NWA meteorite has yielded some potentially-valuable
>data, and the stone was made available by private nomad hunters and
>private collector/dealers.  Without private involvement, this
>meteorite would still be laying undiscovered in the desert and
>possibly buried forever by the marching dunes, or left to suffer the
>fate of terrestrialization as a part of desert pavement.  It's a fun
>and positive thing that laymen can become involved in science in an
>indirect way that produces real results.  And this is also another
>example of how find coordinates for some meteorites is secondary to
>more important secrets the specimens hold.  In this particular case,
>the find coordinates are not fundamental to the discovery.
>
>http://www.scientificamerican.com/blog/post.cfm?id=meteorite-nugget-pushes-back-age-of-2010-08-23
>
>Best regards,
>
>MikeG
>
>
>-- 
>
>Mike Gilmer - Galactic Stone & Ironworks Meteorites
>http://www.galactic-stone.com
>http://www.facebook.com/galacticstone
>
>__
>Visit the Archives at 
>http://www.meteoritecentral.com/mailing-list-archives.html
>Meteorite-list mailing list
>Meteorite-list@meteoritecentral.com
>http://six.pairlist.net/mailman/listinfo/meteorite-list



  

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Private involvement helping science

2010-08-25 Thread Meteorites USA
Hi Mike, You bring up a valid and accurate point. Private sector 
meteorite hunters have provided meteorites for study for decades, and 
have grown institutional collections ever bigger over the years. Many 
privately funded meteorite hunters have supplied thousands upon 
thousands of meteorites to both institutions and the private sector for 
study and collection. Many thousands of meteorites have been discovered, 
recovered, classified, studied, analyzed, and new scientific discoveries 
have been made as a result. It really feels good to be a part of 
discovery, and the science. To get people involved at a grassroots level 
is what will grow this science and lead to more discoveries. There's 
nothing like meteorite hunting!


Yay for private sector meteorite hunters!

Regards,
Eric



On 8/25/2010 8:50 AM, Galactic Stone & Ironworks wrote:

Hi List,

I don't want to re-open the debate between science and laymen over the
involvement of private meteorite hunters.  But I think something
should be pointed out in regards to the recent development about the
age of the solar system (story linked below).  This story is a perfect
example of how private involvement can benefit meteoritics and science
as a whole.  This NWA meteorite has yielded some potentially-valuable
data, and the stone was made available by private nomad hunters and
private collector/dealers.  Without private involvement, this
meteorite would still be laying undiscovered in the desert and
possibly buried forever by the marching dunes, or left to suffer the
fate of terrestrialization as a part of desert pavement.  It's a fun
and positive thing that laymen can become involved in science in an
indirect way that produces real results.  And this is also another
example of how find coordinates for some meteorites is secondary to
more important secrets the specimens hold.  In this particular case,
the find coordinates are not fundamental to the discovery.

http://www.scientificamerican.com/blog/post.cfm?id=meteorite-nugget-pushes-back-age-of-2010-08-23

Best regards,

MikeG


   

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Private involvement helping science

2010-08-25 Thread John higgins
Hi Mike, 

I strongly agree with your post, and in particular this statement,

"It's a fun and positive thing that laymen can become involved in science in an
indirect way that produces real results.  And this is also another
example of how find coordinates for some meteorites is secondary to
more important secrets the specimens hold.  In this particular case,
the find coordinates are not fundamental to the discovery."

Thanks for sharing that with us,

John Higgins
IMCA # 9822


- Original Message 
From: Galactic Stone & Ironworks 
To: Meteorite List 
Sent: Wed, August 25, 2010 11:50:31 AM
Subject: [meteorite-list] Private involvement helping science

Hi List,

I don't want to re-open the debate between science and laymen over the
involvement of private meteorite hunters.  But I think something
should be pointed out in regards to the recent development about the
age of the solar system (story linked below).  This story is a perfect
example of how private involvement can benefit meteoritics and science
as a whole.  This NWA meteorite has yielded some potentially-valuable
data, and the stone was made available by private nomad hunters and
private collector/dealers.  Without private involvement, this
meteorite would still be laying undiscovered in the desert and
possibly buried forever by the marching dunes, or left to suffer the
fate of terrestrialization as a part of desert pavement.  It's a fun
and positive thing that laymen can become involved in science in an
indirect way that produces real results.  And this is also another
example of how find coordinates for some meteorites is secondary to
more important secrets the specimens hold.  In this particular case,
the find coordinates are not fundamental to the discovery.

http://www.scientificamerican.com/blog/post.cfm?id=meteorite-nugget-pushes-back-age-of-2010-08-23



Best regards,

MikeG


-- 

Mike Gilmer - Galactic Stone & Ironworks Meteorites
http://www.galactic-stone.com
http://www.facebook.com/galacticstone

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


  
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Who is the DMOZ meteorite page editor?

2010-08-25 Thread Galactic Stone & Ironworks
Hi List,

Does anyone know who the editor is for the DMOZ Directory meteorite pages?

I notice that the directory has a lack of newer sites and newly
submitted sites are not being approved in a timely manner.  I'd like
to contact the editor about expanding the directory in this regard.

If you are the editor, or know who is the editor is, please contact me
offlist via email - meteoritem...@gmail.com

Best regards,

MikeG


Mike Gilmer - Galactic Stone & Ironworks Meteorites
http://www.galactic-stone.com
http://www.facebook.com/galacticstone

__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] test

2010-08-25 Thread Meteorites USA

test
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Nevada Dry Lake

2010-08-25 Thread Chris Spratt

Hi List:

When was the first Nevada Dry Lake H4 chondrite found? And by whom?

Thanks,

Chris. Spratt
Victoria, BC
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


Re: [meteorite-list] Search for first U.S. lunar meteorite

2010-08-25 Thread Thunder Stone

List:
 
These are great resource sites to help identify possible lunar meteorites.  As 
you can clearly see, it would be very easy to walk right over one unless it had 
a nice fresh fusion crust.
 
http://curator.jsc.nasa.gov/lunar/compendium.cfm
 
and,
 
http://curator.jsc.nasa.gov/antmet/lmc/lmc.cfm
 
Good luck to everyone out there,
 
The Search is ON!
 
I apologize if this has posted twice.
 
Greg S
  
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Secret of Twin Asteroid Birth Revealed

2010-08-25 Thread Sterling K. Webb

The Yarkovsky Effect Strikes Again!


Sterling K. Webb

http://www.space.com/scienceastronomy/asteroid-formation-divorced-asteroid-pair-study-100825.html

Secret of Twin Asteroid Birth Revealed
By Mike Wall, SPACE.com Senior Writer
posted: 25 August 2010, 01:09 pm ET

Asteroids are changeable worlds that can split
into pieces, creating two smaller space rocks
with separate paths around the sun, a new study
finds. The process can happen non-destructively -
just add sunlight and lots of time.

The space rock discovery comes from an analysis
of 35 so-called "divorced asteroid pairs" by an
international team of astronomers. First discovered
only two years ago, divorced asteroid pairs are
space rocks that take similar - but separate -
paths around the sun, and have come very close
together at some point in the last million years.
Their origins remained a mystery, until now.

"Asteroids aren't just static boulders floating
around in space," said study co-author Daniel
Scheeres of the University of Colorado, Boulder.
"They're constantly evolving over time."

The research team, led by astronomer led by Petr
Pravec of the Astronomical Institute in the Czech
Republic, used several telescopes around the world
to make the asteroid find. They determined the
sizes of these asteroids by measuring their relative
brightness, and studied the spin rate of each pair
with a technique known as photometry.

"It was clear to us then that just computing orbits
of the paired asteroids was not sufficient to
understand their origin," Pravec said in statement.
"We had to study the properties of the bodies."

The research is detailed in the Aug. 26 issue of
the journal Nature.


Twin asteroid birth predicted:

The asteroids scrutinized in the study were all
on the small side, averaging less than 6 miles
(10 km) wide. Researchers found that all of the
asteroid pairs analyzed shared a specific size
relationship: The smaller one was always less
than 60 percent as big as its companion. These
measurements fit precisely with a theory Scheeres
developed in 2007, which postulated a way that
divorced asteroid pairs could form.

Scheeres' theory addressed the nature and destiny
of "binary asteroid pairs" - asteroids that orbit
each other as they zoom around the sun. Unlike
"divorced pairs," the two asteroids share an
overall path, orbiting together.

Binary asteroid pairs are fairly common in the
solar system. One way they can form, astronomers
think, is via some long-term solar heating. If an
asteroid is small - less than 6 miles or so in
diameter - the sun can help break it apart. Solar
radiation blasting one side can cause the space
rock to spin faster and faster over millions of
years.

"When sunlight shines on asteroids, it can spin
them up like a propeller," Scheeres told SPACE.com.

Most known asteroids in the solar system are
concentrated in a region between the orbits of
Mars and Jupiter called the asteroid belt, which
is about 200 million miles from the sun. But some
also extend into the inner solar system as near-
Earth asteroids. Astronomers estimate there are
1 million asteroids larger than 0.6 miles (1 km)
wide, in the solar system. NASA's infrared WISE
space telescope has discovered more than 25,000
previously unknown asteroids in the last six months.


More observations needed:
Many asteroids are thought to be "rubble piles,"
rocky bits and pieces held together by each other's
tenuous gravity. If the solar-induced spin gets fast
enough, a chunk on an asteroid's end can split off.

In binary asteroid pairs, the theory goes, this chunk
sticks with the bigger, "parent" asteroid, and the two
rotate around each other. But Scheeres' calculations
predicted that the "baby" can break free if it's less
than 60 percent as big as the parent. The result would
be two space rocks that take slightly different paths
around the sun - a divorced asteroid pair.

The new study's findings confirmed that theory and
should help astronomers understand how asteroids
form and develop - and give them further confidence
that many of their theories and models represent reality.

"It's one thing to do the math and predict these things,"
Scheeres said. "It's another to actually go out and
observe them."


__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Rocks from Space Picture of the Day - August 26, 2010

2010-08-25 Thread Michael Johnson
http://www.rocksfromspace.org/August_26_2010.html


-





http://www.rocksfromspace.org
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] Mifflin it is!

2010-08-25 Thread Bob King
Hi everyone,
Looks like the Wisconsin fall is officially Mifflin according to the
MetBull which lists it as an L5, S1. Link:
http://tin.er.usgs.gov/meteor/metbull.php?code=52090
Bob
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list


[meteorite-list] test

2010-08-25 Thread Meteorites USA

test
__
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list