[meteorite-list] Kepler Data & Theia
New Scientist: Two planets found sharing one orbit http://www.newscientist.com/article/dn20160-two-planets-found-sharing-one-orbit.html Popular Science: Two Planets Discovered Sharing the Same Orbit http://www.popsci.com/science/article/2011-02/two-planets-discovered-sharing-same-orbit Architecture and Dynamics of Kepler's Candidate Multiple Transiting Planet Systems http://arxiv.org/abs/1102.0543 Giant Impact Hypothesis: http://en.wikipedia.org/wiki/Giant_impact_hypothesis __ 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] Geoff's book
Listees, I agree the photography is excellent (wink wink) I am only kidding around. I just said that because me and my lovely friend Suzanne are the star photographers :) It really is an awesome book though, all kidding aside ;>) Love you guys! Leigh Anne DelRay IMCA #7446 www.callistoimages.com On Sat, Feb 26, 2011 at 11:24 AM, Laurence Garvie wrote: > I also have the book. The photography is excellent. > > Laurence > CMS > ASU > > > > On Feb 26, 2011, at 9:19 AM, meteorite-list-requ...@meteoritecentral.com > wrote: > >> Message: 22 >> Date: Sat, 26 Feb 2011 11:13:26 -0500 >> From: "Walter Branch" >> Subject: [meteorite-list] Geoff's book >> To: >> Message-ID: <007401cbd5d0$19ccd800$0402a8c0@Desktop> >> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; >> reply-type=response >> >> Hello Everyone, >> >> I just received Geoff's book. I like it. The book is written for novices >> but it has a place on any meteorite collector's shelf. >> >> I particularly like the glossy pages with wonderful pictures. The pictures >> of Geoff and Geoff and Steve hunting meteorites and the meteorites are >> fantastic. Excellent photography and book amounts to a "how-to" for hunting >> meteorites. >> >> If you haven't purchased one, do so. You won't regret it. >> >> Thanks Geoff. Very nice book. >> >> Get it here: >> http://www.aerolite.org/ >> >> -Walter Branch >> - Original Message - >> From: "Paul Harris" >> To: >> Sent: Friday, February 25, 2011 1:22 PM >> Subject: [meteorite-list] February Issue of Meteorite Times Now Up >> <-corrected Link > > __ > 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] OFF TOPIC:GemShow Memorabilia wanted
Dear Listees: I have a friend who is interested in acquiring (free or with cash-money) vintage Tucson Show memorabilia, especially the big 'Tucson Show Guides', from 2000 and earlier. She is also interested in old photos (b&w is fine), as well as postcards and images from famous shows that no longer exist, like the Desert Inn and the Congress Street Expo. Also: does anyone know how long The Show has been held at the Inn Suites, and how many times over the years it has changed names and owners? Thank you guys, love you guys! Leigh Anne DelRay IMCA #7446 www.callistoimages.com __ 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: Wold Cottage with Brick piece of Monument Plus some meteorite related items!
Hi List. I just put on eBay a small slice of Wold Cottage with an actual original piece of brick from the Wold Cottage Monument both acquired from Rob Elliott. Also I have some more neat meteorite display items for your collection and a vintage meteorite Postcard. http://shop.ebay.com/emflocater/m.html?_trksid=p4340.l2562 Thank you. Sincerely Don Merchant Founder-Cosmic Treasures Celestial Wonders http://www.ctreasurescwonders.com/index.html __ 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] Auctions ending today and tomorrow -AD
Dear Meteorite List, Great selection of meteorites ending soon! http://stores.ebay.com/Outer-Space-Rocks/_i.html?rt=nc&_dmd=1&_sid=16403087&_trksid=p4634.c0.m14&_vc=1 Best Regards, John Higgins IMCA# 9822 www.outerspacerocks.com geohigg...@yahoo.com __ 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] FRIDAY POP QUIZ ANSWER
Hello Listers, I would like to thank everyone that submitted an answer for the POP QUIZ. I would like to congratulate Carl S for being the first Lister to send me the correct answer because there wasn't a 7th Lister to send me the right answer. Carl will be receiving a Weston meteorite micro meteorite fragment from the first American meteorite fall in 1807. Question from: Whats the highest price a meteorite has sold at auction? Answer: On May 17, 1998, at a Phillips auction in New York featuring the Macovich Collection, the American Museum of Natural History paid what is still the highest price ever paid for a complete slice of a meteorite at a public offering ($137,500). http://darrylpitt.com/bio.html The second highest price a meteorite sold at auction was an iron meteorite from Siberia fetched $123,000 (£60,000). http://news.bbc.co.uk/2/hi/7066340.stm And the third highest meteorite that sold at auction was a 355 pound Compo Del Cielo iron meteorite for $93,000. Now it seems that two of these meteorite came from Macovich Collection which is considered one of the finest collection of aesthetic iron meteorites in the world. One can conclude aesthetic can out play the market value of a meteorite by 10 fold or higher. Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_trksid=p4340.l2562 [meteorite-list] FRIDAY POP QUIZ Shawn Alan photophlow at yahoo.com Fri Feb 25 18:09:33 EST 2011 Previous message: [meteorite-list] A chance photo discovery Next message: [meteorite-list] Final statement re Auction Results Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hello Listers, Today is a POP QUIZ Now with all this talking about meteorite auctions I think my POP QUIZ would go perfectly with the current tends that has take place this week on the LIST. Name of the game If you are the 7 Th list, lucky number 7, to email me of the List with the correct answer you will receive and free 8mg Weston meteorite fragment, from 1807, the first American meteorite. Question: Whats the highest price a meteorite has sold at auction? Thank you and enjoy :) Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_trksid=p4340.l2562 Previous message: [meteorite-list] A chance photo discovery Next message: [meteorite-list] Final statement re Auction Results Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Meteorite-list mailing 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] Meteorites Illuminate Mystery of Chromium in Earth’s Core
http://www.universetoday.com/83452/meteorites-illuminate-mystery-of-chromium-in-earths-core/ Phil Whitmer __ 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] Meteorites Illuminate Mystery of Chromium in Earth's Core
- http://www.universetoday.com/83452/meteorites-illuminate-mystery-of-chromium-in-earths-core/--Meteorites Illuminate Mystery of Chromium in Earth's Coreby Anne Minard on February 24, 2011It's generally assumed that the Earth's overall composition is similar tothat of chondritic meteorites, the primitive, undifferentiated buildingblocks of the solar system. But a new study in Science Express led byFrederic Moynier, of the University of California at Davis, seems to suggestthat Earth is a bit of an oddball.Thin section of a chondritic meteorite. Credit: NASAMoynier and his colleagues analyzed the isotope signature of chromium in avariety of meteorites, and found that it differed from chromium's signaturein the mantle."We show through high-precision measurements of Cr stable isotopes in arange of meteorites, which deviate by up to ~0.4? from the bulk silicateEarth, that Cr depletion resulted from its partitioning into Earth's corewith a preferenti al enrichment in light isotopes," the authors write."Ab-initio calculations suggest that the isotopic signature was establishedat mid-mantle magma ocean depth as Earth accreted planetary embryos andprogressively became more oxidized."Chromium's origins. New evidence suggests that, in the early solar nebula(A), chromium isotopes were divided into two components, one containinglight isotopes, the other heavy isotopes. In the early Earth (B), thesecomponents formed a homogeneous mixture. During core partitioning (C), thecore became enriched with lighter chromium isotopes, and the mantle withheavier isotopes. Courtesy of Science/AAASThe results point to a process known as "core partitioning," rather than analternative process involving the volatilization of certain chromiumisotopes so that they would have escaped from the Earth's mantle. Corepartitioning took place early on Earth at high temperatures, when the coreseparated from the silicate earth, leaving the core with a distin ctcomposition that is enriched with lighter chromium isotopes, notes WilliamMcDonough, from the University of Maryland at College Park, in anaccompanying Perspective piece.McDonough writes that chromium, Earth's 10th most abundant element, is namedfor the Greek word for color and "adds green to emeralds, red to rubies,brilliance to plated metals, and corrosion-proof quality to stainlesssteels." It is distributed roughly equally throughout the planet.He says the new result "adds another investigative tool for understandingand documenting past and present planetary processes. For the cosmochemistryand meteoritics communities, the findings further bolster the view that thesolar nebula was a heterogeneous mixture of different components."Source: Science. The McDonough paper will be published online today by thejournal Science, at the Science Express website.--Two questions: How do they know what kind of chormium is in the Earth's coreand is 0.4% a statistically significant number?Phil Whitmer __ 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] February Issue of Meteorite Times Now Up
Dear Geoff, Thank you very much for your post. It's hard to believe we just published our 107th issue :-) And thank you for acknowledging the hard work and dedication of our contributing authors. They all have busy lives and commitments yet there they are every month... There would be no Meteorite Times without them. Have a great day! Paul On 2/26/2011 11:11 AM, Notkin wrote: Paul Harris wrote: The following URL gives access to the Web Browser View, Flash Magazine View, and Mobile PDF. http://www.meteorite-times.com/monthly-issues/ Dear Paul: Congrats on the new issue! I am continually impressed by the way in which you and Jim employ the latest technology to educate the world about meteorites. The Web View/Mag View/Mobil PDF options are ingenious, user-friendly, and beautiful to look at. I don't know how you guys have found the time to put out this quality online publication even month without fail for, lo, these many years, as well as running your websites, but please know that your efforts are greatly appreciated. Here's hoping we get to enjoy "Meteorite Times" for many years to come, and hats off to all your hardworking columnists. It takes a great deal of dedication to produce a monthly column (I know from personal experience!). Job well done, all around. "MT" is something that everyone in the community should be proud of. Cheers, Geoff N. www.aerolite.org www.meteoritemen.com __ 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] AD-Auctions Ending
I have a couple of bigger-ticket items ending later. Please have a look at http://stores.ebay.com/Mile-High-Meteorites. Thank you! Matt Matt Morgan Mile High Meteorites http://www.mhmeteorites.com P.O. Box 151293 Lakewood, CO 80215 __ 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] Looking for a 3cm Gibeon cube
Hello, Looking for a 3cm Gibeon cube. Please email me offlist Thanks Andre Moutinho __ 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] Mark Boslough poster and video re Libyan Desert Glass -- simulation of geoablation from meteor air burst 29.5 Ma: Rich Murray 2011.02.27
Mark Boslough poster and video re Libyan Desert Glass -- simulation of geoablation from meteor air burst 29.5 Ma: Rich Murray 2011.02.27 http://rmforall.blogspot.com/2011_02_01_archive.htm Sunday, February 27, 2011 [ at end of each long page, click on Older Posts ] http://groups.yahoo.com/group/astrodeep/message/81 [you may have to Copy and Paste URLs into your browser] [ Thanks to Dennis Cox http://craterhunter.wordpress.com/ ] http://dl.dropbox.com/u/2268163/DesertGlass.pdf 2 page Computers and Information Sciences Red Storm [ supercomputer, Sandia Labs, Albuquerque, New Mexico ] High performance computing provides clues to scientific mystery Enigmatic silica glass in the Sahara desert has survived nearly 30 million years. How did it form? (Left) Libyan Desert Glass is found in an area spanning 6500 km2, in the Great Sand Sea of the Western Desert of Egypt, near the border with Libya. In 1998, an Italian mineralogist showed that a carved scarab in King Tut’s breastplate was made out of this glass. Red Storm was used to simulate the airburst and impact of a 120-meter diameter stony asteroid. Most natural glasses are volcanic in origin and have chemical compositions consistent with equilibrium fractional melting. The rare exceptions are tektites formed by shock melting associated with the hypervelocity impact of a comet or asteroid. Libyan Desert Glass does not fall into either category, and has baffled scientists since its discovery by British explorers in 1932. The 1994 collision of Comet ShoemakerLevy 9 with Jupiter provided Sandia with a unique opportunity to model a hypervelocity atmospheric impact. Insights gained from those simulations and astronomical observations of the actual event have led to a deeper understanding of the geologic process of impacts on Earth and presented a likely scenario for the formation of Libyan Desert Glass. High-resolution hydrocode simulations, requiring huge amounts of memory and processing power, support the hypothesis that the glass was formed by radiative heating and ablation of sandstone and alluvium near ground zero of a 100 Megaton or larger explosion resulting from the breakup of a comet or asteroid. Using Sandia’s Red Storm supercomputer, we ran CTH shock-physics simulations to show how a 120-meter asteroid entering the atmosphere at 20 km/s (effective yield of about 110 Megatons) breaks up just before hitting the ground. This generates a fireball that remains in contact with the Earth’s surface at temperatures exceeding the melting temperature of quartz for more than 20 seconds. Moreover, the air speed behind the blast wave exceeds several hundred meters per second during this time. These conditions are consistent with melting and ablation of the surface followed by rapid quenching to form the Libyan Desert Glass. These simulations require the massive parallel processing power provided with Red Storm. The risk to humans from such impacts is small but not negligible. Because of the low frequency of these events, the probability and consequences are both difficult to determine. The most likely scenario that would cause damage and casualties would not be a craterforming impact, but a large aerial burst similar to the one that created this unusual natural glass. This research is forcing risk assessments to recognize and account for the process of large aerial bursts. [ supercomputer simulation images in color of vertical impact torch hitting ground from air burst with very complex curling flows 3.80 sec frame 205 in Part 5 of NG video documentry 4.00 sec frame 210 torch hits ground 5.00 sec 7.49 sec frame 228 9.99 sec frame 232 ~5 km ground radius, gives expansion velocity ~800 m/sec after hitting ground at 4 sec, to 6 sec later at 10 sec. ] Ablated meteoritic vapor mixes with the atmosphere to form an opaque fireball with a temperature of thousands of degrees. The hot vapor cloud expands to a diameter of 10 km within seconds, remaining in contact with the surface, with velocities of several 100 m/s. Simulations suggest strong coupling of thermal radiation to the ground, and efficient ablation of the resulting melt by the high-velocity shear flow. NATIONAL GEOGRAPHIC DOCUMENTRY In February, 2006, Mark Boslough participated in an expedition to the site of the Libyan Desert Glass (LDG). The glass has a fission-track age of about 29.5 Ma. There is little doubt that the glass is the product of an impact event, but the precise mechanism for its formation is still a matter of debate. This lively discussion was a featured element of the documentary. Evidence for a direct impact includes the presence of shocked quartz grains and meteoritic material within the glass. However, the vast expanse of the glass and lack of an impact structure suggests the possibility of radiative/convective heating from an aerial burst. "Ancient Asteroid" will be shown on the Nation
