[meteorite-list] Meteorite Squares Wanted
G'day all, I'm looking for 40 meteorite squares or circles (20mm diameter). Approximate square dimensions would need to be 20mmx20mm and no more than 2mm-2.5mm thick. An unclassified NWA is fine, preferably with some metal flecks. If anyone is interested and can help, could you please contact me off-list. Thanks, Jeff Kuyken Meteorites Australia www.meteorites.com.au __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Rocks from Space Picture of the Day - January14, 2008
To steal might be too hard. Let's say he wanted to move the meteorite away. Well, and if something seems to go wrong you always can try to arrange a large eating and drinking party. Not easy to stop the run of a meteorite hunter with his capture - for him it means bringing the baby home ;-) - Original Message - From: Jason Phillips [EMAIL PROTECTED] To: Matthias Bärmann [EMAIL PROTECTED]; [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Tuesday, January 15, 2008 12:11 AM Subject: Re: [meteorite-list] Rocks from Space Picture of the Day - January14, 2008 Hello List and Matthias, I also thought that was a unique sentence, and I wonder if by caught it meant that he was trying to steal the specimen. And if so why they sent him home with a 107 kg piece and not to jail? Take Care, Jason Rocks from Heaven www.rocksfromheaven.com - Original Message - From: Matthias Bärmann [EMAIL PROTECTED] To: [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Monday, January 14, 2008 5:04 PM Subject: Re: [meteorite-list] Rocks from Space Picture of the Day - January14, 2008 In 1906, Henry Ward tried to leave the town with the whole mass, but was caught, and did manage to obtain a 107 kg end-piece. Don't know why but I love this sentence ;-) - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Monday, January 14, 2008 12:17 PM Subject: [meteorite-list] Rocks from Space Picture of the Day - January 14,2008 http://www.rocksfromspace.org/January_14_2008.html _ **Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp0030002489 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Look forward to Asteroid ParisHilton
http://www.wisn.com/education/15056479/detail.html Racine Sophomores Discover Asteroid POSTED: 4:23 pm CST January 15, 2008 RACINE, Wis. -- Three Racine sophomore students were notified on Monday that a celestial body they discovered during a science project had been verified as an asteroid. The students at Racine's Prairie School will be able to name the asteroid, temporarily identified as 2008 AZ28, in about four years, according to the Minor Planet Center in Cambridge, Mass., the international authority on known objects in the solar system. Sophomores Connor Leipold, Tim Pastika and Kyle Simpson were able to make the discovery thanks to technology provided from Calvin College in Grand Rapids, Mich., which is also the alma mater of the science teacher, Andrew Vanden Heuvel, school spokeswoman Susan Paprcka said. Its extremely rare and I dont know if an asteroid has ever been discovered by high school students before, Vanden Heuvel said. Ninety-nine percent are discovered by professional researchers. Calvin College has telescopes located in New Mexico that operate remotely and can be controlled over the Internet. Vanden Heuvel explained that the telescopes take digital pictures of the sky -- about one per hour for four hours each night. The students watched the photos as if they were watching a movie in slow motion, keeping close eye on what changes were taking place in the sky. The asteroid must be observed two nights in a row in order for it to be considered an official discovery, Vanden Heuvel said. Asteroids are not easy to spot,Mr. Vanden Heuvel said. They are very faint, about 10,000 times fainter than the faintest thing you can see with your naked eyes. You need to know how to look for them. He estimates that the 2008 AZ28 asteroid takes approximately five years to orbit the sun. The students also located other potential objects that may be asteroids, and are currently conducting follow-up research. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Berthoud
Very nice! I love the layer of crust. Was any of Berthoud made available to collectors? Mike -- Original message -- From: [EMAIL PROTECTED] http://www.rocksfromspace.org/January_16_2008.html __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics
Meteor Pelting May Have Triggered Plate Tectonics Larry O'Hanlon, Discovery News http://dsc.discovery.com/news/2007/12/10/meteors-earth.html http://dsc.discovery.com/news/2007/12/10/meteors-earth-print.html Hansen , V. L., 2007, Subduction origin on early Earth: A hypothesis. Geology. vol. 35, no. 12, pp. 10591062 http://www.gsajournals.org/perlserv/?request=get-abstractdoi=10.1130%2FG24202A.1 Yours, Paul H. Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Special - a new fresh CM2 and the 1st non-Antarctic CM1
Dear Collectors, Chladnis Heirs decided to herald the new year with a beat of the drum in making a representative of an established type for the first time available to the collector: NWA 4765 The first CM1 outside of Antarctica. A glance into the Bulletin Database teaches us, that so far 12 tiny stones, some of them paired, were found in Antarctica with a combined tkw of a mere 105grams. We are well aware of the importance of the new find, especially for the type-collectors, who wished for years to fill the gap left of Murchison in their showcases, Alas, here the dilemma starts: Like the Antarctic CM1, NWA 4765 was a small, fresh stone of only 19grams and by far we wont be able to comply with all requests. Find the few available specimens and the detailed description on our Special page. Prices for slices are 1250$/g. http://www.chladnis-heirs.com/special-nwa5037-nwa4765.html For the unlikely case, that the main mass wont be sold, exists the possibility, that we could slice it up and will retrieve a few more slices. Therefore, if you find the other slices already sold out, let us immediately know, whether you want to apply for another specimen. The second part of our special is perhaps not so sensational as the first, but nevertheless isnt half bad: NWA 5037 A new and fresh CM2. Spoiled from the good availability of Murchison, were surprised, how stingy the hot deserts are in bringing forward CM2 to the collectorship: If we let Dho 735 as metamorphosed CM aside, there were in the recent decade not more than 7 CM2s recovered in the hot deserts with a total weight of slightly below 2kgs, whereof only Acfer 331 is at present available without difficulties. NWA 5037 is with a weathering degree of W0/1 a wonderfully fresh meteorite, the 3 fragments of that find displayed partially still some fusion crust. As you can see, it is a CM2 of a very classic habit, an exemplary representative of his class and at that price certainly a tempting addition for your collection. Also here the supply is limited, weighed the stones not more than 65 grams. In our special are presented all available specimens: http://www.chladnis-heirs.com/special-nwa5037-nwa4765.html Priced at 60-65$/gram (to serve you best, please tell 2 alterative slices with your order, for the case, the desired specimen will have already gone). Now we wish you a peace- and successful 2008 ! Stefan Martin Chladnis Heirs Munich - Berlin Fine Meteorites for Science and Collectors __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] MESSENGER Reveals Mercury in New Detail
The Johns Hopkins University Applied Physics Laboratory Office of Communications and Public Affairs Laurel, Maryland Media Contacts: Paulette Campbell (240) 228-6792 or (443) 778-6792 [EMAIL PROTECTED] January 16, 2008 FOR IMMEDIATE RELEASE MESSENGER REVEALS MERCURY IN NEW DETAIL As MESSENGER approached Mercury on Jan. 14, the spacecraft's Narrow-Angle Camera on the Mercury Dual Imaging System (MDIS) instrument captured a view of the planet's rugged, cratered landscape illuminated obliquely by the Sun. See the image at http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=118 The large, shadow-filled, double ringed crater to the upper right was glimpsed by Mariner 10 more than three decades ago and named Vivaldi, after the Italian composer. Its outer ring has a diameter of about 200 kilometers (about 125 miles). MESSENGER's modern camera has revealed detail that was not well seen by Mariner 10, including the broad ancient depression overlapped by the lower-left part of the Vivaldi crater. The MESSENGER science team is in the process of evaluating later images snapped from even closer range showing features on the side of Mercury never seen by Mariner 10. It is already clear that MESSENGER's superior camera will tell us much that could not be resolved even on the side of Mercury viewed by Mariner's vidicon camera in the mid-1970s. This MESSENGER image was taken from a distance of about 18,000 kilometers (11,000 miles), about 56 minutes before the spacecraft's closest encounter with Mercury. It shows a region roughly 500 kilometers (300 miles) across, and craters as small as 1 kilometer (0.6 mile) can be seen in this image. Additional information and features from this first flyby will be available online at http://messenger.jhuapl.edu/mer_flyby1.html Check for the latest released images and science results. MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) is a NASA-sponsored scientific investigation of the planet Mercury and the first space mission designed to orbit the planet closest to the Sun. The MESSENGER spacecraft launched on August 3, 2004, and after flybys of Earth, Venus, and Mercury will start a yearlong study of its target planet in March 2011. Dr. Sean C. Solomon, of the Carnegie Institution of Washington, leads the mission as Principal Investigator. The Johns Hopkins University Applied Physics Laboratory built and operates the MESSENGER spacecraft and manages this Discovery-class mission for NASA. ### __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] MRO HiRISE Images - January 16, 2008
MARS RECONNAISSANCE ORBITER HIRISE IMAGES January 16, 2008 o Intersecting Graben in Utopia Planitia http://hirise.lpl.arizona.edu/PSP_006500_2200 o Dust-Devil Tracks in Southern Schiaparelli Basin http://hirise.lpl.arizona.edu/PSP_006477_1745 o Colliding Dunes in Meridiani Planum http://hirise.lpl.arizona.edu/PSP_006254_1885 o Intra-Crater Deposits in Nilosyrtis http://hirise.lpl.arizona.edu/PSP_006250_2200 All of the HiRISE images are archived here: http://hirise.lpl.arizona.edu/ Information about the Mars Reconnaissance Orbiter is online at http://www.nasa.gov/mro. The mission is managed by NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, for the NASA Science Mission Directorate, Washington, D.C. Lockheed Martin Space Systems, of Denver, is the prime contractor and built the spacecraft. HiRISE is operated by the University of Arizona. Ball Aerospace and Technologies Corp., of Boulder, Colo., built the HiRISE instrument. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] MESSENGER Reveals Mercury in New Detail
On Wed, 16 Jan 2008 14:17:49 -0800 (PST), you wrote: As MESSENGER approached Mercury on Jan. 14, the spacecraft's Narrow-Angle Camera on the Mercury Dual Imaging System (MDIS) instrument captured a view of the planet's rugged, cratered landscape illuminated obliquely by the Sun. See the image at http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=118 Here's a quick attempt at removing some of the distortion in the raw photo: http://webpages.charter.net/garrison6328/tmp/mercury_fixed.jpg __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics
Before I read the following links, I'd like to express my unscientific opinion about this subject. I'm sure there are numerous causes for the separation of Pangaea into its present configuration, that is, the present continental shapes. As I became enthralled with the impact hypothesis surrounding the K/T event. I mused that Pangaea had been impacted by a string of meteorites actually perforating it in some places to trigger the break-up. As a Northeasterner I mused that, the Baltic, Africa and NE NA, might present such a perforation boundary. As I said earlier, Volcanism and Plate Tectonics [presently I can't think of any other causes] might be sufficient to trigger break-up. Today, California and eastern Africa don't seem to need much else. So, That being said, I'll eagerly return to read the links associated with this post. Thanks for your patience. Jerry Flaherty - Original Message - From: Paul [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 1:05 PM Subject: [meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics Meteor Pelting May Have Triggered Plate Tectonics Larry O'Hanlon, Discovery News http://dsc.discovery.com/news/2007/12/10/meteors-earth.html http://dsc.discovery.com/news/2007/12/10/meteors-earth-print.html Hansen , V. L., 2007, Subduction origin on early Earth: A hypothesis. Geology. vol. 35, no. 12, pp. 1059-1062 http://www.gsajournals.org/perlserv/?request=get-abstractdoi=10.1130%2FG24202A.1 Yours, Paul H. Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics
I guess my musings and Vicki Hansen's researched hypothesis aren't related, in time anyway. My musing only takes into account the fact that the Connecticut River Valley, 100 miles from the coast, is thought to be the result a collision of ancient plate boundaries. The fact the the much later break-up occurred not there, at the Berkshire Mountains margin, but 100+ miles from the CRV, just made me wonder if another mechanism might be at work. Granted, the coastal region, at least where glacial debris has not cover it up, is host to a string of ancient extinct volcanoes 30 miles south of Boston through the Canadian Provinces across the Atlantic through the Celtic isles into Scandinavia. And the brittle nature of these lavas may be provide sufficient explanation for the modern continental configuration given appropriate stresses applied through the mechanism of tectonics. But musing doesn't cost much and cataclysm of the mind doesn't hurt. Jerry Flaherty - Original Message - From: Paul [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 1:05 PM Subject: [meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics Meteor Pelting May Have Triggered Plate Tectonics Larry O'Hanlon, Discovery News http://dsc.discovery.com/news/2007/12/10/meteors-earth.html http://dsc.discovery.com/news/2007/12/10/meteors-earth-print.html Hansen , V. L., 2007, Subduction origin on early Earth: A hypothesis. Geology. vol. 35, no. 12, pp. 1059-1062 http://www.gsajournals.org/perlserv/?request=get-abstractdoi=10.1130%2FG24202A.1 Yours, Paul H. Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Pre Tucson Extravaganza Offers - AD
Dear List Members, I have just re-listed 265 eBay auctions that did not sell after the first round or more. I would like to offer List members an excellent opportunity to get exceptional material at outstanding values. All of the auctions have the Buy it Now feature, so if you see that special something, click and it is yours! If the price you see is just not good enough for you, instead of going behind closed doors to discuss discounts like at the Tucson Show, make me an offer on anything I have, and if not sold in one week, I will consider your offer, especially on the large ticket specimens. You never know, you may end up with your best deal here instead of going all the way to Tucson!! To see all that I have listed, click here (Take a look, well worth it even if you are not in the market at this time): http://search.ebay.com/_W0QQsassZnaturesvault Here is a quick list of what I have listed in order of eBay appearance this week: NWA 4799 True Aubrite (100% Money Back Guarantee that it remains an Aubrite classification, already priced the best I can do!) NWA 4883 Maskelynite-rich Eucrite (Last 12 pieces) NWA 4930 Shergottite (Paired to NWA 2795) NWA 2995 Lunar (Three pieces, two best at very end of list) NWA 1068 Shergottite NWA 1950 Lherzolitic Shergottite (Only two pieces left) NWA 4527 Shergottite (Last two pieces) NWA 3161 LL3.7 (Outstanding Chondrules!) NWA 2952 CK4 (Gorgeous) NWA 4801 Angrite (Simply the Best!) NWA 4478 Brecciated Lodranite (World's First Brecciated) NWA 4468 Primitive Shergottite (Fresh, Fresh, Fresh!!!) NWA 4590 Tamassint Angrite (Fresh and Beautiful) NWA 4587 Ungrouped (Paired to NWA 011) NWA 4473 Brecciated Diogenite (Lunar Looking) Mali Bassikounou NWA 4528 H5 500-gram lots Unclassified 2-kilo Lots NWA 869 1-kilo lots Amgala (Oum Dreyga) Dhofar 950 Lunar Gao NWA 3160 Lunar NWA 3171 Shergottite NWA 2995 Lunar (Last but not least, two of the best slices available, one polished!) Don't be shy with your offers, you never know how nice I will be ;-) In some cases the listed price is the best I can do because of high acquisition costs. In these cases, if you see what you must have, bid and win so you don't hesitate and lose it to another collector. I will be out of town on a short expedition from Thursday 17th through the 22nd so I will not be able to answer any questions during that time. If you see what you like and feel the price is right, click it quick as someone else may want it also. I will consider all offers when I get back and answer all emails. If you need to make special payment plan arrangements for the more expensive items, let me know what you have in mind and I may be able to accommodate you. Best regards and Thank You for looking and/or bidding! Greg Greg Hupe The Hupe Collection NaturesVault (eBay) [EMAIL PROTECTED] www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] CM1 is sold out
The CM1 has gone completely. No piece available any longer. Thank you, Martin __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury
http://messenger.jhuapl.edu/news_room/status_report_01_16_08_2.html MESSENGER Mission News January 16, 2008 [Evening Update] Two New Images from MESSENGER's First Flyby of Mercury Detailed Close-up of Mercury's Previously Unseen Surface Just 21 minutes after MESSENGER's closest approach to Mercury on January 14, 2008, the Narrow Angle Camera (NAC) took this picture http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=119 showing a variety of intriguing surface features, including craters as small as about 300 meters (about 300 yards) across. This is one of a set of 68 NAC images showing landscapes near Mercury's equator on the side of the planet never before imaged by spacecraft. From such highly detailed close-ups, planetary geologists can study the processes that have shaped Mercury's surface over the past 4 billion years. One of the highest and longest scarps (cliffs) yet seen on Mercury curves from the top center down across the right side of this image. (The Sun is shining low from the left, so the scarp casts a wide shadow.) Great forces in Mercury's crust have thrust the terrain occupying the left two-thirds of the picture up and over the terrain to the right. An impact crater has subsequently destroyed a small part of the scarp near the top of the image. This image was taken from a distance of only 5,800 kilometers (3,600 miles) from surface of the planet and shows a region about 170 kilometers (about 100 miles) across. Mercury's Cratered Surface During its flyby of Mercury, the MESSENGER spacecraft acquired high-resolution images of the planet's surface. This image http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=120, taken by the Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS), was obtained on January 14, 2008, about 37 minutes after MESSENGER's closest approach to the planet. The image reveals the surface of Mercury at a resolution of about 360 meters/pixel (about 1,180 feet/pixel), and the width of the image is about 370 kilometers (about 230 miles). This image is the 98th in a set of 99 images that were taken in a pattern of 9 rows and 11 columns to enable the creation of a large, high-resolution mosaic of the northeast quarter of the region not seen by Mariner 10. During the encounter with Mercury, the MDIS acquired image sets for seven large mosaics with the NAC. This image shows a previously unseen crater with distinctive bright rays of ejected material extending radially outward from the crater's center. A chain of craters nearby is also visible. Studying impact craters provides insight into the history and composition of Mercury as well as dynamical processes that occurred throughout our Solar System. The MESSENGER Science Team has begun analyzing these high-resolution images to unravel these fundamental questions. MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) is a NASA-sponsored scientific investigation of the planet Mercury and the first space mission designed to orbit the planet closest to the Sun. The MESSENGER spacecraft launched on August 3, 2004, and after flybys of Earth, Venus, and Mercury will start a yearlong study of its target planet in March 2011. Dr. Sean C. Solomon, of the Carnegie Institution of Washington, leads the mission as principal investigator. The Johns Hopkins University Applied Physics Laboratory built and operates the MESSENGER spacecraft and manages this Discovery -class mission for NASA. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury
Do the bright rays indicate a more recent impact? Jerry Flaherty - Original Message - From: Ron Baalke [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:36 PM Subject: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury http://messenger.jhuapl.edu/news_room/status_report_01_16_08_2.html MESSENGER Mission News January 16, 2008 [Evening Update] Two New Images from MESSENGER's First Flyby of Mercury Detailed Close-up of Mercury's Previously Unseen Surface Just 21 minutes after MESSENGER's closest approach to Mercury on January 14, 2008, the Narrow Angle Camera (NAC) took this picture http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=119 showing a variety of intriguing surface features, including craters as small as about 300 meters (about 300 yards) across. This is one of a set of 68 NAC images showing landscapes near Mercury's equator on the side of the planet never before imaged by spacecraft. From such highly detailed close-ups, planetary geologists can study the processes that have shaped Mercury's surface over the past 4 billion years. One of the highest and longest scarps (cliffs) yet seen on Mercury curves from the top center down across the right side of this image. (The Sun is shining low from the left, so the scarp casts a wide shadow.) Great forces in Mercury's crust have thrust the terrain occupying the left two-thirds of the picture up and over the terrain to the right. An impact crater has subsequently destroyed a small part of the scarp near the top of the image. This image was taken from a distance of only 5,800 kilometers (3,600 miles) from surface of the planet and shows a region about 170 kilometers (about 100 miles) across. Mercury's Cratered Surface During its flyby of Mercury, the MESSENGER spacecraft acquired high-resolution images of the planet's surface. This image http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=120, taken by the Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS), was obtained on January 14, 2008, about 37 minutes after MESSENGER's closest approach to the planet. The image reveals the surface of Mercury at a resolution of about 360 meters/pixel (about 1,180 feet/pixel), and the width of the image is about 370 kilometers (about 230 miles). This image is the 98th in a set of 99 images that were taken in a pattern of 9 rows and 11 columns to enable the creation of a large, high-resolution mosaic of the northeast quarter of the region not seen by Mariner 10. During the encounter with Mercury, the MDIS acquired image sets for seven large mosaics with the NAC. This image shows a previously unseen crater with distinctive bright rays of ejected material extending radially outward from the crater's center. A chain of craters nearby is also visible. Studying impact craters provides insight into the history and composition of Mercury as well as dynamical processes that occurred throughout our Solar System. The MESSENGER Science Team has begun analyzing these high-resolution images to unravel these fundamental questions. MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) is a NASA-sponsored scientific investigation of the planet Mercury and the first space mission designed to orbit the planet closest to the Sun. The MESSENGER spacecraft launched on August 3, 2004, and after flybys of Earth, Venus, and Mercury will start a yearlong study of its target planet in March 2011. Dr. Sean C. Solomon, of the Carnegie Institution of Washington, leads the mission as principal investigator. The Johns Hopkins University Applied Physics Laboratory built and operates the MESSENGER spacecraft and manages this Discovery -class mission for NASA. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury
Jerry: Yes, bright rays indicate younger craters. When the crater is created, some of the rock is shock melted, forming a glassy material that we see as the bright ray eminating from the impact site. Larry On Wed, January 16, 2008 7:55 pm, Jerry wrote: Do the bright rays indicate a more recent impact? Jerry Flaherty - Original Message - From: Ron Baalke [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:36 PM Subject: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury http://messenger.jhuapl.edu/news_room/status_report_01_16_08_2.html MESSENGER Mission News January 16, 2008 [Evening Update] Two New Images from MESSENGER's First Flyby of Mercury Detailed Close-up of Mercury's Previously Unseen Surface Just 21 minutes after MESSENGER's closest approach to Mercury on January 14, 2008, the Narrow Angle Camera (NAC) took this picture http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id= 2image_id=119 showing a variety of intriguing surface features, including craters as small as about 300 meters (about 300 yards) across. This is one of a set of 68 NAC images showing landscapes near Mercury's equator on the side of the planet never before imaged by spacecraft. From such highly detailed close-ups, planetary geologists can study the processes that have shaped Mercury's surface over the past 4 billion years. One of the highest and longest scarps (cliffs) yet seen on Mercury curves from the top center down across the right side of this image. (The Sun is shining low from the left, so the scarp casts a wide shadow.) Great forces in Mercury's crust have thrust the terrain occupying the left two-thirds of the picture up and over the terrain to the right. An impact crater has subsequently destroyed a small part of the scarp near the top of the image. This image was taken from a distance of only 5,800 kilometers (3,600 miles) from surface of the planet and shows a region about 170 kilometers (about 100 miles) across. Mercury's Cratered Surface During its flyby of Mercury, the MESSENGER spacecraft acquired high-resolution images of the planet's surface. This image http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id =2image_id=120, taken by the Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS), was obtained on January 14, 2008, about 37 minutes after MESSENGER's closest approach to the planet. The image reveals the surface of Mercury at a resolution of about 360 meters/pixel (about 1,180 feet/pixel), and the width of the image is about 370 kilometers (about 230 miles). This image is the 98th in a set of 99 images that were taken in a pattern of 9 rows and 11 columns to enable the creation of a large, high-resolution mosaic of the northeast quarter of the region not seen by Mariner 10. During the encounter with Mercury, the MDIS acquired image sets for seven large mosaics with the NAC. This image shows a previously unseen crater with distinctive bright rays of ejected material extending radially outward from the crater's center. A chain of craters nearby is also visible. Studying impact craters provides insight into the history and composition of Mercury as well as dynamical processes that occurred throughout our Solar System. The MESSENGER Science Team has begun analyzing these high-resolution images to unravel these fundamental questions. --- - MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) is a NASA-sponsored scientific investigation of the planet Mercury and the first space mission designed to orbit the planet closest to the Sun. The MESSENGER spacecraft launched on August 3, 2004, and after flybys of Earth, Venus, and Mercury will start a yearlong study of its target planet in March 2011. Dr. Sean C. Solomon, of the Carnegie Institution of Washington, leads the mission as principal investigator. The Johns Hopkins University Applied Physics Laboratory built and operates the MESSENGER spacecraft and manages this Discovery -class mission for NASA. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Two New Images from MESSENGER's First Flybyof Mercury
Hi, Jerry, That is the received wisdom derived from study of our Moon, that bright rayed craters are fresher. I would think that it would be truer on Mercury than the Moon, as the UV intensity and the strength of the solar wind should darken them faster. You could probably get a great tan and a light microwaving in no time on Mercury. There are a multitude of teeny craters like freckles and lots of very crisp small craters, while most of the medium and large craters do not look fresh. In the very first closeup picture released, there was a good sized crater with a brighter fresher crater 60% of its size almost dead center inside of it! How many impacts that size do you have to have to get two shots on dead center? Lots. I've been flipping through pictures of other surfaces to see if I can find another example like that and, so far, I can't. The crater- counters will have a field day! It's also surprising how many linear crater alignments there are. There will be a repeat of the arguments from lunar days of whether they are Shoemaker-Levy-style multi-impact chains or collapsed lava tubes. Mercury only looks like the Moon at a casual glance. Even in the old Videcon TV pictures of Mariner 10, it looked strange. In these closer, much more detailed images, it looks even stranger. Lots of collapse features. There may be more vulcanism than we think likely. Ah! There's a good argument! Sterling K. Webb - Original Message - From: Jerry [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED]; Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:55 PM Subject: Re: [meteorite-list] Two New Images from MESSENGER's First Flybyof Mercury Do the bright rays indicate a more recent impact? Jerry Flaherty - Original Message - From: Ron Baalke [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:36 PM Subject: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury http://messenger.jhuapl.edu/news_room/status_report_01_16_08_2.html MESSENGER Mission News January 16, 2008 [Evening Update] Two New Images from MESSENGER's First Flyby of Mercury Detailed Close-up of Mercury's Previously Unseen Surface Just 21 minutes after MESSENGER's closest approach to Mercury on January 14, 2008, the Narrow Angle Camera (NAC) took this picture http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=119 showing a variety of intriguing surface features, including craters as small as about 300 meters (about 300 yards) across. This is one of a set of 68 NAC images showing landscapes near Mercury's equator on the side of the planet never before imaged by spacecraft. From such highly detailed close-ups, planetary geologists can study the processes that have shaped Mercury's surface over the past 4 billion years. One of the highest and longest scarps (cliffs) yet seen on Mercury curves from the top center down across the right side of this image. (The Sun is shining low from the left, so the scarp casts a wide shadow.) Great forces in Mercury's crust have thrust the terrain occupying the left two-thirds of the picture up and over the terrain to the right. An impact crater has subsequently destroyed a small part of the scarp near the top of the image. This image was taken from a distance of only 5,800 kilometers (3,600 miles) from surface of the planet and shows a region about 170 kilometers (about 100 miles) across. Mercury's Cratered Surface During its flyby of Mercury, the MESSENGER spacecraft acquired high-resolution images of the planet's surface. This image http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=120, taken by the Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS), was obtained on January 14, 2008, about 37 minutes after MESSENGER's closest approach to the planet. The image reveals the surface of Mercury at a resolution of about 360 meters/pixel (about 1,180 feet/pixel), and the width of the image is about 370 kilometers (about 230 miles). This image is the 98th in a set of 99 images that were taken in a pattern of 9 rows and 11 columns to enable the creation of a large, high-resolution mosaic of the northeast quarter of the region not seen by Mariner 10. During the encounter with Mercury, the MDIS acquired image sets for seven large mosaics with the NAC. This image shows a previously unseen crater with distinctive bright rays of ejected material extending radially outward from the crater's center. A chain of craters nearby is also visible. Studying impact craters provides insight into the history and composition of Mercury as well as dynamical processes that occurred throughout our Solar System. The MESSENGER Science Team has begun analyzing these
[meteorite-list] I am home after nearly three week trip.
Hi list members, after more than two weeks in the field with no email access, I am finally home. It will take me some time to start weeding out the emails, so if you emailed me, give me a chance to catch up. Tucson is just about 10 days away, so things will get very busy here. Michael Farmer __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Two New Images from MESSENGER's First FlybyofMercury
collapse lava tubes as opposed to impact chains [oh darn] Jerry Flaherty - Original Message - From: Sterling K. Webb [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Cc: Gerald Flaherty [EMAIL PROTECTED]; Ron Baalke [EMAIL PROTECTED]; Larry Lebofsky [EMAIL PROTECTED] Sent: Wednesday, January 16, 2008 10:24 PM Subject: Re: [meteorite-list] Two New Images from MESSENGER's First FlybyofMercury Hi, Jerry, That is the received wisdom derived from study of our Moon, that bright rayed craters are fresher. I would think that it would be truer on Mercury than the Moon, as the UV intensity and the strength of the solar wind should darken them faster. You could probably get a great tan and a light microwaving in no time on Mercury. There are a multitude of teeny craters like freckles and lots of very crisp small craters, while most of the medium and large craters do not look fresh. In the very first closeup picture released, there was a good sized crater with a brighter fresher crater 60% of its size almost dead center inside of it! How many impacts that size do you have to have to get two shots on dead center? Lots. I've been flipping through pictures of other surfaces to see if I can find another example like that and, so far, I can't. The crater- counters will have a field day! It's also surprising how many linear crater alignments there are. There will be a repeat of the arguments from lunar days of whether they are Shoemaker-Levy-style multi-impact chains or collapsed lava tubes. Mercury only looks like the Moon at a casual glance. Even in the old Videcon TV pictures of Mariner 10, it looked strange. In these closer, much more detailed images, it looks even stranger. Lots of collapse features. There may be more vulcanism than we think likely. Ah! There's a good argument! Sterling K. Webb - Original Message - From: Jerry [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED]; Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:55 PM Subject: Re: [meteorite-list] Two New Images from MESSENGER's First Flybyof Mercury Do the bright rays indicate a more recent impact? Jerry Flaherty - Original Message - From: Ron Baalke [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Wednesday, January 16, 2008 8:36 PM Subject: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury http://messenger.jhuapl.edu/news_room/status_report_01_16_08_2.html MESSENGER Mission News January 16, 2008 [Evening Update] Two New Images from MESSENGER's First Flyby of Mercury Detailed Close-up of Mercury's Previously Unseen Surface Just 21 minutes after MESSENGER's closest approach to Mercury on January 14, 2008, the Narrow Angle Camera (NAC) took this picture http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=119 showing a variety of intriguing surface features, including craters as small as about 300 meters (about 300 yards) across. This is one of a set of 68 NAC images showing landscapes near Mercury's equator on the side of the planet never before imaged by spacecraft. From such highly detailed close-ups, planetary geologists can study the processes that have shaped Mercury's surface over the past 4 billion years. One of the highest and longest scarps (cliffs) yet seen on Mercury curves from the top center down across the right side of this image. (The Sun is shining low from the left, so the scarp casts a wide shadow.) Great forces in Mercury's crust have thrust the terrain occupying the left two-thirds of the picture up and over the terrain to the right. An impact crater has subsequently destroyed a small part of the scarp near the top of the image. This image was taken from a distance of only 5,800 kilometers (3,600 miles) from surface of the planet and shows a region about 170 kilometers (about 100 miles) across. Mercury's Cratered Surface During its flyby of Mercury, the MESSENGER spacecraft acquired high-resolution images of the planet's surface. This image http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2image_id=120, taken by the Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS), was obtained on January 14, 2008, about 37 minutes after MESSENGER's closest approach to the planet. The image reveals the surface of Mercury at a resolution of about 360 meters/pixel (about 1,180 feet/pixel), and the width of the image is about 370 kilometers (about 230 miles). This image is the 98th in a set of 99 images that were taken in a pattern of 9 rows and 11 columns to enable the creation of a large, high-resolution mosaic of the northeast quarter of the region not seen by Mariner 10. During the encounter with Mercury, the MDIS acquired image sets for seven large mosaics with the NAC. This image
Re: [meteorite-list] Asteroid Impacts May Have Triggered Plate Tectonics(OT)
There is no evidence-- direct or inferred-- that the trace of the eastern shoreline of North America is impact influenced. While much of what you relate is sequentially correct it co-mingles 700+ million years of geological history into a related event. The Connecticut River Valley is a rift valley and not a collision boundary--Otherwise it wouldn't be a Valley but the Connecticut River Mountains Perhaps you would like to Muse this: Avalonia http://en.wikipedia.org/wiki/Avalonia And this link for the origins of the CRV Lava flows http://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_massachusetts.html The lava flow, now seen as prominent ridgelines overlooking the valley lowlands, formed as basalt oozed out of faults associated with the Eastern Border Fault ... the Connecticut Valley sequence is determined to be early Mesozoic -- from late Triassic through early Jurassic Periods. Between 190 and 194 my North America and Baltica rifted and basalt erupted from where Patterson NJ lies now, through The Pallasides on the Hudson up through the Conneticut River Valley on through the Berkshires. This rift zone accumulated several hundred feet of basalt. Here is what is said by the USGS CVO page: Elton --- Jerry [EMAIL PROTECTED] wrote: ...My musing only takes into account the fact that the Connecticut River Valley, 100 miles from the coast, is thought to be the result a collision of ancient plate boundaries. The fact the the much later break-up occurred not there, at the Berkshire Mountains margin, but 100+ miles from the CRV, just made me wonder if another mechanism might be at work. Granted, the coastal region, at least where glacial debris has not cover it up, is host to a string of ancient extinct volcanoes 30 miles south of Boston through the Canadian Provinces across the Atlantic through the Celtic isles into Scandinavia. And the brittle nature of these lavas may be provide sufficient explanation for the modern continental configuration given appropriate stresses applied through the mechanism of tectonics. But musing doesn't cost much and cataclysm of the mind doesn't hurt. Jerry Flaherty __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
