[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Kendleton Contributed by: José Antonio Sanchez http://www.tucsonmeteorites.com/mpod.asp __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NASA-Funded Scientists Detect Water on Moon's Surface that Hints at Water Below
August 27, 2013 Dwayne Brown Headquarters, Washington 202-358-1726 dwayne.c.br...@nasa.gov Rachel Hoover Ames Research Center, Moffett Field, Calif. 650-604-4789 rachel.hoo...@nasa.gov Paulette Campbell Applied Physics Laboratory, Laurel, Md. 240-228-6792 paulette.campb...@jhuapl.edu RELEASE 13-267 NASA-Funded Scientists Detect Water on Moon's Surface that Hints at Water Below NASA-funded lunar research has yielded evidence of water locked in mineral grains on the surface of the moon from an unknown source deep beneath the surface. Using data from NASA's Moon Mineralogy Mapper (M3) instrument aboard the Indian Space Research Organization's Chandrayaan-1 spacecraft, scientists remotely detected magmatic water, or water that originates from deep within the moon's interior, on the surface of the moon. The findings, published Aug. 25 in Nature Geoscience, represent the first detection of this form of water from lunar orbit. Earlier studies had shown the existence of magmatic water in lunar samples returned during the Apollo program. M3 imaged the lunar impact crater Bullialdus, which lies near the lunar equator. Scientists were interested in studying this area because they could better quantify the amount of water inside the rocks due to the crater's location and the type of rocks it held. The central peak of the crater is made up of a type of rock that forms deep within the lunar crust and mantle when magma is trapped underground. This rock, which normally resides deep beneath the surface, was excavated from the lunar depths by the impact that formed Bullialdus crater, said Rachel Klima, a planetary geologist at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md. Compared to its surroundings, we found that the central portion of this crater contains a significant amount of hydroxyl - a molecule consisting of one oxygen atom and one hydrogen atom -- which is evidence that the rocks in this crater contain water that originated beneath the lunar surface, Klima said. In 2009, M3 provided the first mineralogical map of the lunar surface and discovered water molecules in the polar regions of the moon. This water is thought to be a thin layer formed from solar wind hitting the moon's surface. Bullialdus crater is in a region with an unfavorable environment for solar wind to produce significant amounts of water on the surface. NASA missions like Lunar Prospector and the Lunar Crater Observation and Sensing Satellite and instruments like M3 have gathered crucial data that fundamentally changed our understanding of whether water exists on the surface of the moon, said S. Pete Worden, center director at NASA's Ames Research Center in Moffett Field, Calif. Similarly, we hope that upcoming NASA missions such as the Lunar Atmosphere and Dust Environment Explorer, or LADEE, will change our understanding of the lunar sky. The detection of internal water from orbit means scientists can begin to test some of the findings from sample studies in a broader context, including in regions that are far from where the Apollo sites are clustered on the near side of the moon. For many years, researchers believed that the rocks from the moon were bone-dry and any water detected in the Apollo samples had to be contamination from Earth. Now that we have detected water that is likely from the interior of the moon, we can start to compare this water with other characteristics of the lunar surface, said Klima. This internal magmatic water also provides clues about the moon's volcanic processes and internal composition, which helps us address questions about how the moon formed, and how magmatic processes changed as it cooled. APL is a not-for-profit division of Johns Hopkins University. Joshua Cahill and David Lawrence of APL and Justin Hagerty of the U.S. Geological Survey's Astrogeology Science Center in Flagstaff, Ariz., co-authored the paper. NASA's Lunar Advanced Science and Engineering Program, the NASA Lunar Science Institute (NLSI) at Ames and the NASA Planetary Mission Data Analysis Program supported the research. NLSI is a virtual organization jointly funded by NASA's Science Mission Directorate and NASA's Human Exploration and Operations Mission Directorate in Washington, to enable collaborative, interdisciplinary research in support of NASA lunar science programs. For more information about NASA programs, visit: http://www.nasa.gov -end- __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Ebay - New CM2 - JBILET WINSELWAN - slices and fragments available now !!
Hi list, Beautiful cut slices, end cuts and fragments of the very fresh and new JBILET WINSELWAN CM2 are available now ! Prepared and cut by spacejewels switzerland ! No reserve, low starting bid at USD 1.99 ! Please have a look if interested. http://stores.ebay.com/SAHARAGEMS-Meteorites-and-more Thanks Happy bidding Tom www.spacejewels.ch www.saharagems.com www.meteorite.xxx __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD- Auctions Ending In A Few Hours
Dear List Members, I have some great auctions ending early this evening. Please take a look if you can spare a few moments. Link to all auctions: http://shop.ebay.com/raremeteorites!/m.html Thank you for looking and if you are bidding, good luck, Adam __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Slovakia / Czech / Poland Bolide likely produced Mets. Sonics and video.
List, Just updated. Slovakia Meteor also seen in Czech and Poland. Video capture. Produced sonics in Slovakia and most likely produced meteorites. http://lunarmeteoritehunters.blogspot.jp/2013/08/mbiq-detects-slovakia-meteor-24aug2013.html Dirk Ross...Tokyo __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Definitely a rocket launch Wednesday morning on West Coast.
http://www.kfiam640.com/pages/billcarroll.html?article=11606724#.Uh0gqtUdLBQ.gmail __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NASA'S Mars Curiosity Debuts Autonomous Navigation
http://www.jpl.nasa.gov/news/news.php?release=2013-259 NASA'S Mars Curiosity Debuts Autonomous Navigation Jet Propulsion Laboratory August 27, 2013 PASADENA, Calif. - NASA's Mars rover Curiosity has used autonomous navigation for the first time, a capability that lets the rover decide for itself how to drive safely on Mars. This latest addition to Curiosity's array of capabilities will help the rover cover the remaining ground en route to Mount Sharp, where geological layers hold information about environmental changes on ancient Mars. The capability uses software that engineers adapted to this larger and more complex vehicle from a similar capability used by NASA's Mars Exploration Rover Opportunity, which is also currently active on Mars. Using autonomous navigation, or autonav, Curiosity can analyze images it takes during a drive to calculate a safe driving path. This enables it to proceed safely even beyond the area that the human rover drivers on Earth can evaluate ahead of time. On Tuesday, Aug. 27, Curiosity successfully used autonomous navigation to drive onto ground that could not be confirmed safe before the start of the drive. This was a first for Curiosity. In a preparatory test last week, Curiosity plotted part of a drive for itself, but kept within an area that operators had identified in advance as safe. Curiosity takes several sets of stereo pairs of images, and the rover's computer processes that information to map any geometric hazard or rough terrain, said Mark Maimone, rover mobility engineer and rover driver at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The rover considers all the paths it could take to get to the designated endpoint for the drive and chooses the best one. The drive on Tuesday, the mission's 376th Martian day, or sol, took Curiosity across a depression where ground-surface details had not been visible from the location where the previous drive ended. The drive included about 33 feet (10 meters) of autonomous navigation across hidden ground as part of a day's total drive of about 141 feet (43 meters). We could see the area before the dip, and we told the rover where to drive on that part. We could see the ground on the other side, where we designated a point for the rover to end the drive, but Curiosity figured out for herself how to drive the uncharted part in between, said JPL's John Wright, a rover driver. Curiosity is nearly two months into a multi-month trek from the Glenelg area, where it worked for the first half of 2013, to an entry point for the mission's major destination: the lower layers of a 3-mile-tall (5-kilometer-tall) mound called Mount Sharp. The latest drive brought the distance traveled since leaving Glenelg to 0.86 mile (1.39 kilometers). The remaining distance to the Mount Sharp entry point is about 4.46 miles (7.18 kilometers) along a rapid transit route. That route was plotted on the basis of images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. The actual driving route, which will be based on images from Curiosity's own cameras, could be longer or shorter. Curiosity's science team has picked a few waypoints along the rapid transit route to Mount Sharp where driving may be suspended for a few days for science. The rover has about 0.31 mile (500 meters) left to go before reaching the first of these waypoints, which appears from orbiter images to offer exposed bedrock for inspection. Each waypoint represents an opportunity for Curiosity to pause during its long journey to Mount Sharp and study features of local interest, said Curiosity Project Scientist John Grotzinger of the California Institute of Technology, Pasadena. These features are geologically interesting, based on HiRISE images, and they lie very close to the path that provides the most expeditious route to the base of Mount Sharp. We'll study each for several sols, perhaps selecting one for drilling if it looks sufficiently interesting. After landing inside Gale Crater in August 2012, Curiosity drove eastward to the Glenelg area, where it accomplished the mission's major science objective of finding evidence for an ancient wet environment that had conditions favorable for microbial life. The rover's route is now southwestward. At Mount Sharp, in the middle of Gale Crater, scientists anticipate finding evidence about how the ancient Martian environment changed and evolved. JPL, a division of Caltech, manages the Mars Science Laboratory Project for NASA's Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover. More information about Curiosity is online at http://www.jpl.nasa.gov/msl , http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl/ . You can follow the mission on Facebook at http://www.facebook.com/marscuriosity and on Twitter at http://www.twitter.com/marscuriosity . Guy Webster 818-354-6278 Jet Propulsion Laboratory, Pasadena, Calif.
Re: [meteorite-list] Slovakia / Czech / Poland Bolide likely produced Mets. Sonics and video.
Thank you for the information, Dirk! I was hoping for some photo or video capture of this event. There are also these observations, at least partly, available (in automatic translation): Time: *** CET / CEST Name of observer: Marek Jureček Location: near Zilina District: Slovakia, Žilina Circumstances observations: When you return to the High Tatras I looked out the window car probably south and I saw strong greenish glow of the tail. In the first moment I thought it flares. Then I saw on the internet photo bolide of observations in the similar time, so I'm almost sure I saw it too. Certainly lighted and earth, because driver thought that someone had flashed the high beam. source: http://meteor.asu.cas.cz/db/report/disp.phtml?id=14472 Name of observer: Josef Vitoul, Miloš Jelinek Wed Location: Nemotice District: Vyškov Circumstances observations: When returning from visit famous we roughly middle of the village, when crossing žel.přejezdu tracks Nemotice-Korycany, both suddenly spotted over southern greenish horizon ft ^ ^ ^ ^ something that about 2/3 of the visible smoke trails visibly about 1 second brightened green flash so that it could be seen clouds in nejbližím brightening the area. As we walked in direction from west to east, we phenomenon on the right hand. We smoke trails could not miss it because Its color and length. A more precise time seconds are not able to determine I could only look for mobile phone, but it was after 21.hod.between first and second minute. source: http://meteor.asu.cas.cz/db/report/disp.phtml?id=14474 Martin Von: drtanuki drtan...@yahoo.com An: meteorite-list meteorite-list@meteoritecentral.com Betreff: [meteorite-list] Slovakia / Czech / Poland Bolide likely produced Mets. Sonics and video. Datum: Tue, 27 Aug 2013 23:30:46 +0200 List, Just updated. Slovakia Meteor also seen in Czech and Poland. Video capture. Produced sonics in Slovakia and most likely produced meteorites. http://lunarmeteoritehunters.blogspot.jp/2013/08/mbiq-detects-slovakia-meteor-24aug2013.html Dirk Ross...Tokyo __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Postfach fast voll? Jetzt kostenlos E-Mail Adresse @t-online.de sichern und endlich Platz für tausende Mails haben. http://www.t-online.de/email-kostenlos __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Chelyabinsk Meteorite May Have Collided with Another Body in Solar System
http://www.sci-news.com/space/science-chelyabinsk-meteorite-another-body-solar-system-01338.html Chelyabinsk Meteorite May Have Collided with Another Body in Solar System Sci-News.com Aug 27, 2013 According to a team of Russian scientists reporting today at the Goldschmidt conference in Italy, the Chelyabinsk meteorite either collided with another body or came too close to the Sun before it fell to our planet. The researchers from the Institute of Geology and Mineralogy in Novosibirsk have analyzed fragments of the meteorite, the main body of which fell to the bottom of the Chebarkul Lake near Chelyabinsk on February 15, 2013. Although all of the fragments are composed of the same minerals, the structure and texture of some fragments show that the meteorite had undergone an intensive melting process before it was subjected to extremely high temperatures on entering the Earth's atmosphere. The meteorite which landed near Chelyabinsk is a type known as an LL5 chondrite and it's fairly common for these to have undergone a melting process before they fall to Earth, said Dr Victor Sharygin, who is a first author of the study (an abstract has been published in the Mineralogical Magazine). This almost certainly means that there was a collision between the Chelyabinsk meteorite and another body in the solar system or a near miss with the Sun. Based on their color and structure, the researchers have divided the meteorite fragments into three types: light, dark and intermediate. The lighter fragments are the most commonly found, but the dark fragments are found in increasing numbers along the meteorite's trajectory, with the greatest number found close to where it hit the Earth. The dark fragments include a large proportion of fine-grained material, and their structure, texture and mineral composition shows they were formed by a very intensive melting process, likely to have been either a collision with another body or proximity to the Sun. This material is distinct from the fusion crust - the thin layer of material on the surface of the meteorite that melts, then solidifies, as it travels through the Earth's atmosphere. The fine-grained material of the dark fragments also differs from the other samples as it commonly contains spherical bubbles which are either encrusted with perfect crystals of oxides, silicates and metal or filled with metal and sulfide. Surprisingly, the scientists also found small quantities of platinum group elements in the meteorite's fusion crust. They identify these elements as an alloy of osmium, iridium and platinum, but its presence is unusual as the fusion crust is formed over too short a time period for these elements to easily accumulate. Platinum group elements usually occur as trace elements dispersed in meteorite minerals, but we found them as a nanometer-sized mineral (100-200 nm) in a metal-sulfide globule in the fusion crust of the Chelyabinsk meteorite, Dr Sharygin said. We think the appearance of this platinum group mineral in the fusion crust may be linked to compositional changes in metal-sulfide liquid during remelting and oxidation processes as the meteorite came into contact with atmospheric oxygen. __ Bibliographic information: Sharygin V et al. 2013. Mineralogy of the Chelyabinsk meteorite, Russia. Mineralogical Magazine, 77 (5), p. 2189; doi: 10.1180/minmag.2013.077.5.19 __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - New items added tonight
I have added 2 more Chelyabinsk meteorites to auction tonight. Also a bundle of slightly used Pro-slicer 6 saw blades. Chelyabinsk 4.192gm Chelyabinsk 6.737gm Pro-slicer 6 saw blades - pack of 5 ebay: samhill01 - http://www.ebay.com/sch/samhill01/m.html Rocky's Stones - http://www.bonanza.com/booths/xeqtr __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
