[meteorite-list] Last call - donations to West, TX
Howdy all Anyone else care to send a donation to the West, TX volunteer fire department? We didn't receive as many donations as I had hoped, but I suspect that several of y'all have sent donations to them directly. Here's the link to donate, and again 100% of your donation will go to the West VFD: http://www.galacticanalytics.com/products/miscellaneous/disaster-relief-donation-to-west-tx-vfd/ Cheers, Marc Fries __ 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
Re: [meteorite-list] New Meteorite Found
Hi Dave Way to go congratulations on your new find. Sonny Sent from my iPhone On Apr 25, 2013, at 5:51 PM, David Libuszowski wrote: > Just wanted to share a pretty recent fall meteorite I found while hunting for > meteorites in the desert using the Minelab GPX5000. Has a really black fusion > crust, and performed an xrf analysis of it, as shown in the pics. I have to > say this is one of the most magnetic pieces I have found, besides a solid > iron. > Dave Libuszowski > https://sphotos-b.xx.fbcdn.net/hphotos-frc1/302008_184433205043044_514369302_n.jpg > https://sphotos-a.xx.fbcdn.net/hphotos-ash4/305771_184433315043033_382374224_n.jpg > https://sphotos-a.xx.fbcdn.net/hphotos-ash3/575614_184433351709696_611575177_n.jpg > > dolandave.libuszow...@facebook.com > __ > > 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 __ 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
Re: [meteorite-list] Wolcott CT meteorite fall analysis
That makes 5 witnessed falls for the small state of Connecticut; America's first documented fall, an H4 at Weston in 1807, the two Wethersfield L6 stones that hit houses in 1971 and again in 1982, a single L6 stone that landed in a street in Stratford in 1974, and now the house hitter at Wolcott. Wonder what the state rock should be? Cheers, Frank - Original Message From: Marc Fries To: Meteorite Mailing List Sent: Thu, April 25, 2013 7:19:18 PM Subject: [meteorite-list] Wolcott CT meteorite fall analysis Howdy all The guys and gals at the Galactic Analytics shop have been wringing our brains out over the Wolcott CT event, which was by all accounts a meteorite fall. A meteorite has been recovered from a home after striking the roof on the night of 19 Apr (20 Apr UTC). We have examined all the available evidence - seismometer, radar, eyewitness accounts, etc., and the data set is quite sparse. Nonetheless we at least have a bolide direction to offer on the web page. That should help guide a ground search, and hopefully lead to more meteorites recovered from this event - the first meteorite fall in the US in 2013. http://wp.me/p2AyTK-iB Cheers, Marc Fries, Rob Matson, Jake Schaefer, Jeff Fries, Vishnu Reddy and Lucille LeCorre Galactic Analytics/PSI, in mid-transition... __ 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 __ 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
Re: [meteorite-list] Wolcott CT meteorite fall analysis
Hi Marc and List, Marc and team, thanks for all of your hard work and dedication to increasing the recovery rate of meteorite falls. I don't know if these photos have been seen yet. Our own list member Peter Scherff visited the people who now own the Wolcott meteorite. He posted some photos and details here on this forum - http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5818597/page/0/view/collapsed/sb/5/o/all/fpart/1#Post5821569 This is now the 3rd meteorite fall of this year - Planeta Rica, Chelyabinsk, and Wolcott - http://www.galactic-stone.com/pages/falls Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/GalacticStone Pinterest - http://pinterest.com/galacticstone RSS - http://www.galactic-stone.com/rss/126516 - On 4/25/13, Marc Fries wrote: > Howdy all > > The guys and gals at the Galactic Analytics shop have been wringing our > brains out over the Wolcott CT event, which was by all accounts a meteorite > fall. A meteorite has been recovered from a home after striking the roof on > the night of 19 Apr (20 Apr UTC). We have examined all the available > evidence - seismometer, radar, eyewitness accounts, etc., and the data set > is quite sparse. Nonetheless we at least have a bolide direction to offer on > the web page. That should help guide a ground search, and hopefully lead to > more meteorites recovered from this event - the first meteorite fall in the > US in 2013. > > http://wp.me/p2AyTK-iB > > Cheers, > Marc Fries, Rob Matson, Jake Schaefer, Jeff Fries, Vishnu Reddy and Lucille > LeCorre > Galactic Analytics/PSI, in mid-transition... > __ > > 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 > __ 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] Wolcott CT meteorite fall analysis
Howdy all The guys and gals at the Galactic Analytics shop have been wringing our brains out over the Wolcott CT event, which was by all accounts a meteorite fall. A meteorite has been recovered from a home after striking the roof on the night of 19 Apr (20 Apr UTC). We have examined all the available evidence - seismometer, radar, eyewitness accounts, etc., and the data set is quite sparse. Nonetheless we at least have a bolide direction to offer on the web page. That should help guide a ground search, and hopefully lead to more meteorites recovered from this event - the first meteorite fall in the US in 2013. http://wp.me/p2AyTK-iB Cheers, Marc Fries, Rob Matson, Jake Schaefer, Jeff Fries, Vishnu Reddy and Lucille LeCorre Galactic Analytics/PSI, in mid-transition... __ 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
Re: [meteorite-list] Chelyabinsk - IMB or SMB? The nomenclature of Melts.
Hi Mendy, I read it in Meteoritics & Planetary Science, Volume 48 Number 3 2013 March. Jim On Thu, Apr 25, 2013 at 5:57 PM, Mendy Ouzillou wrote: > where can one read this paper? > > Best, > > > Mendy > > > From: Jim Wooddell > To: Meteorite List > Sent: Thursday, April 25, 2013 5:29 PM > Subject: Re: [meteorite-list] Chelyabinsk - IMB or SMB? The nomenclature of > Melts. > > Hi All! > Just a point of information. I just read Dr. Rubin's paper, Multiple > melting in a four-layered barred-olivine chondrule with > compositionally heterogeneous glass from LL3.0 Semarkona > Whew! That's a title for a paper! > While we are on the subject of melts, I thought I'd point out this > paper. Enjoyed reading it the first timeactually understood some > of it and will read it once again after thinking about it for a while. > You folks might enjoy reading it when you get a chance! > Thanks Alan!! > > > > Jim Wooddell > > > On Wed, Apr 24, 2013 at 8:24 PM, Jim Wooddell wrote: >> Hi Jeff! >> >> To me, Impact Melt should mean total melt to liquid...no fragments of any >> kind.In the case of the classified S4, partial melting occurred, >> confirmed by fragments. Still, various flavors understandable especially >> at >> boundaries. >> Yep, I think nodules is the keyword that is questionable. Graphite >> "nodules" >> are found in Canyon Diablo, for example. Once they find large enough >> pieces >> of this meteorite, they might confirm nodules but they would not be >> abnormal >> or a special anomaly if they are impact melt. >> >> Jim >> >> >> >> On Wed, Apr 24, 2013 at 7:53 PM, Jeff Kuyken >> wrote: >>> >>> Definitely IMB although you will find variations within different stones. >>> Some will be shocked to the point of melt and others will not quite get >>> there. Personally I think IMB and SMB are the exact same terms as both >>> are >>> "melt breccias" and shock is derived from impact. >>> >>> The official classification of Chely states: "A significant portion (1/3) >>> of >>> the stones consist of a dark, fine-grained impact melt containing mineral >>> and chondrule fragments." >>> >>> http://www.lpi.usra.edu/meteor/metbull.php?code=57165 >>> >>> I personally don't think "nodules" is really the correct terminology >>> either. >>> They are just individuals / fragments of the same material shocked to a >>> higher degree in the parent body. For example... compare it to Gao. We >>> don't >>> call the IMB pieces, nodules. They are IMB individuals. The term >>> "nodules" >>> would seem to me to be better reserved for things like "iron nodules" in >>> a >>> stony Mesosiderite or a "Troilite nodule" in an iron meteorite. >>> >>> Good question Mike. >>> >>> Cheers, >>> >>> Jeff >>> >>> -Original Message- >>> From: meteorite-list-boun...@meteoritecentral.com >>> [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of >>> Galactic >>> Stone & Ironworks >>> Sent: Thursday, 25 April 2013 10:42 AM >>> To: Meteorite List >>> Subject: [meteorite-list] Chelyabinsk - IMB or SMB? The nomenclature of >>> Melts. >>> >>> Hi List, >>> >>> We keep hearing about the "IMB nodules" that have been recovered - >>> these have an all-black lithology with no chondrules, shock veins, or >>> grey matrix material. >>> >>> However, these nodules were not created on impact. Had there been >>> such an impact, we would have a visible crater and the nodules would >>> be located in a radius directly adjacent to the crater amidst the >>> ejecta. Instead, these nodules were apparently created during the >>> fragmentation events that took place while the body was still in >>> atmospheric flight. >>> >>> If this is true, shouldn't these nodules be called "shock melt" and >>> not "impact melt" ? >>> >>> Is there any distinction in the official nomenclature between an >>> impact melt and a shock melt? >>> >>> Is it correct to continue using IMB in reference to these Chelyabinsk >>> specimens? >>> >>> Best regards, >>> >>> MikeG >>> >>> -- >>> - >>> Web - http://www.galactic-stone.com >>> Facebook - http://www.facebook.com/galacticstone >>> Twitter - http://twitter.com/GalacticStone >>> Pinterest - http://pinterest.com/galacticstone >>> RSS - http://www.galactic-stone.com/rss/126516 >>> - >>> __ >>> >>> 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 >>> >>> >>> __ >>> >>> 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 >> >> >> >> >> -- >> Jim Wooddell >> jimwoodd...@gmail.com >> 928-247-2675 > > > > -- > Ji
Re: [meteorite-list] New Meteorite Found
Just wanted to share a pretty recent fall meteorite I found while hunting for meteorites in the desert using the Minelab GPX5000. Has a really black fusion crust, and performed an xrf analysis of it, as shown in the pics. I have to say this is one of the most magnetic pieces I have found, besides a solid iron. Dave Libuszowski https://sphotos-b.xx.fbcdn.net/hphotos-frc1/302008_184433205043044_514369302_n.jpg https://sphotos-a.xx.fbcdn.net/hphotos-ash4/305771_184433315043033_382374224_n.jpg https://sphotos-a.xx.fbcdn.net/hphotos-ash3/575614_184433351709696_611575177_n.jpg dolandave.libuszow...@facebook.com __ 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
Re: [meteorite-list] Chelyabinsk - IMB or SMB? The nomenclature of Melts.
Hi All! Just a point of information. I just read Dr. Rubin's paper, Multiple melting in a four-layered barred-olivine chondrule with compositionally heterogeneous glass from LL3.0 Semarkona Whew! That's a title for a paper! While we are on the subject of melts, I thought I'd point out this paper. Enjoyed reading it the first timeactually understood some of it and will read it once again after thinking about it for a while. You folks might enjoy reading it when you get a chance! Thanks Alan!! Jim Wooddell On Wed, Apr 24, 2013 at 8:24 PM, Jim Wooddell wrote: > Hi Jeff! > > To me, Impact Melt should mean total melt to liquid...no fragments of any > kind.In the case of the classified S4, partial melting occurred, > confirmed by fragments. Still, various flavors understandable especially at > boundaries. > Yep, I think nodules is the keyword that is questionable. Graphite "nodules" > are found in Canyon Diablo, for example. Once they find large enough pieces > of this meteorite, they might confirm nodules but they would not be abnormal > or a special anomaly if they are impact melt. > > Jim > > > > On Wed, Apr 24, 2013 at 7:53 PM, Jeff Kuyken wrote: >> >> Definitely IMB although you will find variations within different stones. >> Some will be shocked to the point of melt and others will not quite get >> there. Personally I think IMB and SMB are the exact same terms as both are >> "melt breccias" and shock is derived from impact. >> >> The official classification of Chely states: "A significant portion (1/3) >> of >> the stones consist of a dark, fine-grained impact melt containing mineral >> and chondrule fragments." >> >> http://www.lpi.usra.edu/meteor/metbull.php?code=57165 >> >> I personally don't think "nodules" is really the correct terminology >> either. >> They are just individuals / fragments of the same material shocked to a >> higher degree in the parent body. For example... compare it to Gao. We >> don't >> call the IMB pieces, nodules. They are IMB individuals. The term "nodules" >> would seem to me to be better reserved for things like "iron nodules" in a >> stony Mesosiderite or a "Troilite nodule" in an iron meteorite. >> >> Good question Mike. >> >> Cheers, >> >> Jeff >> >> -Original Message- >> From: meteorite-list-boun...@meteoritecentral.com >> [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Galactic >> Stone & Ironworks >> Sent: Thursday, 25 April 2013 10:42 AM >> To: Meteorite List >> Subject: [meteorite-list] Chelyabinsk - IMB or SMB? The nomenclature of >> Melts. >> >> Hi List, >> >> We keep hearing about the "IMB nodules" that have been recovered - >> these have an all-black lithology with no chondrules, shock veins, or >> grey matrix material. >> >> However, these nodules were not created on impact. Had there been >> such an impact, we would have a visible crater and the nodules would >> be located in a radius directly adjacent to the crater amidst the >> ejecta. Instead, these nodules were apparently created during the >> fragmentation events that took place while the body was still in >> atmospheric flight. >> >> If this is true, shouldn't these nodules be called "shock melt" and >> not "impact melt" ? >> >> Is there any distinction in the official nomenclature between an >> impact melt and a shock melt? >> >> Is it correct to continue using IMB in reference to these Chelyabinsk >> specimens? >> >> Best regards, >> >> MikeG >> >> -- >> - >> Web - http://www.galactic-stone.com >> Facebook - http://www.facebook.com/galacticstone >> Twitter - http://twitter.com/GalacticStone >> Pinterest - http://pinterest.com/galacticstone >> RSS - http://www.galactic-stone.com/rss/126516 >> - >> __ >> >> 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 >> >> >> __ >> >> 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 > > > > > -- > Jim Wooddell > jimwoodd...@gmail.com > 928-247-2675 -- Jim Wooddell jimwoodd...@gmail.com 928-247-2675 __ 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
Re: [meteorite-list] Cassini Observes Meteors Colliding With Saturn's Rings
I'd agree that a meteor can't collide with Saturn's rings, but it would be correct usage to say a meteor collided with an airplane, a bird, or maybe even the ground were it still hypersonic and ablating, since at that stage both the visual effect and the body itself are typically called a "meteor" (something the IAU is considering formalizing last I heard). Chris Chris L Peterson Cloudbait Observatory http://www.cloudbait.com Michael Mulgrew wrote: >A "meteor" can't collide with anything! > >Michael in so. Cal. > >On Thu, Apr 25, 2013 at 12:34 PM, Ron Baalke >wrote: >> >> >> >> April 25, 2013 >> >> Dwayne Brown >> Headquarters, Washington >> 202-358-1726 >> dwayne.c.br...@nasa.gov >> >> Jia-Rui C. Cook >> Jet Propulsion Laboratory, Pasadena, Calif. >> 818-354-0850 >> jcc...@jpl.nasa.gov >> >> RELEASE: 13-120 >> >> NASA PROBE OBSERVES METEORS COLLIDING WITH SATURN'S RINGS >> >> WASHINGTON -- NASA's Cassini spacecraft has provided the first direct >> evidence of small meteoroids breaking into streams of rubble and >> crashing into Saturn's rings. >> >> These observations make Saturn's rings the only location besides >> Earth, the moon, and Jupiter where scientists and amateur astronomers >> have been able to observe impacts as they occur. Studying the impact >> rate of meteoroids from outside the Saturn system helps scientists >> understand how different planet systems in the solar system formed. >> >> Our solar system is full of small, speeding objects. Planetary bodies >> frequently are pummeled by them. The meteoroids at Saturn range from >> about one-half inch to several yards (1 centimeter to several meters) >> in size. It took scientists years to distinguish tracks left by nine >> meteoroids in 2005, 2009 and 2012. >> >> Details of the observations appear in a paper in the Thursday edition >> of Science. >> >> Results from Cassini already have shown Saturn's rings act as very >> effective detectors of many kinds of surrounding phenomena, including >> the interior structure of the planet and the orbits of its moons. For >> example, a subtle but extensive corrugation that ripples 12,000 miles >> (19,000 kilometers) across the innermost rings tells of a very large >> meteoroid impact in 1983. >> >> "These new results imply the current-day impact rates for small >> particles at Saturn are about the same as those at Earth-- two very >> different neighborhoods in our solar system, and this is exciting to >> see," said Linda Spilker, Cassini project scientist at NASA's Jet >> Propulsion Laboratory (JPL) in Pasadena, Calif. "It took Saturn's >> rings acting like a giant meteoroid detector -- 100 times the surface >> area of the Earth -- and Cassini's long-term tour of the Saturn >> system to address this question." >> >> The Saturnian equinox in summer 2009 was an especially good time to >> see the debris left by meteoroid impacts. The very shallow sun angle >> on the rings caused the clouds of debris to look bright against the >> darkened rings in pictures from Cassini's imaging science subsystem. >> >> "We knew these little impacts were constantly occurring, but we didn't >> know how big or how frequent they might be, and we didn't necessarily >> expect them to take the form of spectacular shearing clouds," said >> Matt Tiscareno, lead author of the paper and a Cassini participating >> scientist at Cornell University in Ithaca, N.Y. "The sunlight shining >> edge-on to the rings at the Saturnian equinox acted like an >> anti-cloaking device, so these usually invisible features became >> plain to see." >> >> Tiscareno and his colleagues now think meteoroids of this size >> probably break up on a first encounter with the rings, creating >> smaller, slower pieces that then enter into orbit around Saturn. The >> impact into the rings of these secondary meteoroid bits kicks up the >> clouds. The tiny particles forming these clouds have a range of >> orbital speeds around Saturn. The clouds they form soon are pulled >> into diagonal, extended bright streaks. >> >> "Saturn's rings are unusually bright and clean, leading some to >> suggest that the rings are actually much younger than Saturn," said >> Jeff Cuzzi, a co-author of the paper and a Cassini interdisciplinary >> scientist specializing in planetary rings and dust at NASA's Ames >> Research Center in Moffett Field, Calif. "To assess this dramatic >> claim, we must know more about the rate at which outside material is >> bombarding the rings. This latest analysis helps fill in that story >> with detection of impactors of a size that we weren't previously able >> to detect directly." >> >> The Cassini-Huygens mission is a cooperative project of NASA, the >> European Space Agency and the Italian Space Agency. JPL manages the >> Cassini-Huygens mission for NASA's Science Mission Directorate in >> Washington. JPL designed, developed and assembled the Cassini orbiter >> and its two onboard cameras. The imaging
[meteorite-list] Ad - New Jersey Franklin mineral show
If anyone is going to be in the New Jersey area, the Franklin mineral show will be this Sat and Sun. I will be inside dealer and will bring meteorites as well as fossils and minerals to sell. Thanks, Derek. __ 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
Re: [meteorite-list] Cassini Observes Meteors Colliding With Saturn's Rings
A "meteor" can't collide with anything! Michael in so. Cal. On Thu, Apr 25, 2013 at 12:34 PM, Ron Baalke wrote: > > > > April 25, 2013 > > Dwayne Brown > Headquarters, Washington > 202-358-1726 > dwayne.c.br...@nasa.gov > > Jia-Rui C. Cook > Jet Propulsion Laboratory, Pasadena, Calif. > 818-354-0850 > jcc...@jpl.nasa.gov > > RELEASE: 13-120 > > NASA PROBE OBSERVES METEORS COLLIDING WITH SATURN'S RINGS > > WASHINGTON -- NASA's Cassini spacecraft has provided the first direct > evidence of small meteoroids breaking into streams of rubble and > crashing into Saturn's rings. > > These observations make Saturn's rings the only location besides > Earth, the moon, and Jupiter where scientists and amateur astronomers > have been able to observe impacts as they occur. Studying the impact > rate of meteoroids from outside the Saturn system helps scientists > understand how different planet systems in the solar system formed. > > Our solar system is full of small, speeding objects. Planetary bodies > frequently are pummeled by them. The meteoroids at Saturn range from > about one-half inch to several yards (1 centimeter to several meters) > in size. It took scientists years to distinguish tracks left by nine > meteoroids in 2005, 2009 and 2012. > > Details of the observations appear in a paper in the Thursday edition > of Science. > > Results from Cassini already have shown Saturn's rings act as very > effective detectors of many kinds of surrounding phenomena, including > the interior structure of the planet and the orbits of its moons. For > example, a subtle but extensive corrugation that ripples 12,000 miles > (19,000 kilometers) across the innermost rings tells of a very large > meteoroid impact in 1983. > > "These new results imply the current-day impact rates for small > particles at Saturn are about the same as those at Earth-- two very > different neighborhoods in our solar system, and this is exciting to > see," said Linda Spilker, Cassini project scientist at NASA's Jet > Propulsion Laboratory (JPL) in Pasadena, Calif. "It took Saturn's > rings acting like a giant meteoroid detector -- 100 times the surface > area of the Earth -- and Cassini's long-term tour of the Saturn > system to address this question." > > The Saturnian equinox in summer 2009 was an especially good time to > see the debris left by meteoroid impacts. The very shallow sun angle > on the rings caused the clouds of debris to look bright against the > darkened rings in pictures from Cassini's imaging science subsystem. > > "We knew these little impacts were constantly occurring, but we didn't > know how big or how frequent they might be, and we didn't necessarily > expect them to take the form of spectacular shearing clouds," said > Matt Tiscareno, lead author of the paper and a Cassini participating > scientist at Cornell University in Ithaca, N.Y. "The sunlight shining > edge-on to the rings at the Saturnian equinox acted like an > anti-cloaking device, so these usually invisible features became > plain to see." > > Tiscareno and his colleagues now think meteoroids of this size > probably break up on a first encounter with the rings, creating > smaller, slower pieces that then enter into orbit around Saturn. The > impact into the rings of these secondary meteoroid bits kicks up the > clouds. The tiny particles forming these clouds have a range of > orbital speeds around Saturn. The clouds they form soon are pulled > into diagonal, extended bright streaks. > > "Saturn's rings are unusually bright and clean, leading some to > suggest that the rings are actually much younger than Saturn," said > Jeff Cuzzi, a co-author of the paper and a Cassini interdisciplinary > scientist specializing in planetary rings and dust at NASA's Ames > Research Center in Moffett Field, Calif. "To assess this dramatic > claim, we must know more about the rate at which outside material is > bombarding the rings. This latest analysis helps fill in that story > with detection of impactors of a size that we weren't previously able > to detect directly." > > The Cassini-Huygens mission is a cooperative project of NASA, the > European Space Agency and the Italian Space Agency. JPL manages the > Cassini-Huygens mission for NASA's Science Mission Directorate in > Washington. JPL designed, developed and assembled the Cassini orbiter > and its two onboard cameras. The imaging team consists of scientists > from the United States, England, France and Germany. The imaging > operations center is based at the Space Science Institute in Boulder, > Colo. > > For images of the impacts and information about Cassini, visit: > > http://www.nasa.gov/cassini > > -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 __ Visit the Archives at http://
[meteorite-list] Cassini Observes Meteors Colliding With Saturn's Rings
April 25, 2013 Dwayne Brown Headquarters, Washington 202-358-1726 dwayne.c.br...@nasa.gov Jia-Rui C. Cook Jet Propulsion Laboratory, Pasadena, Calif. 818-354-0850 jcc...@jpl.nasa.gov RELEASE: 13-120 NASA PROBE OBSERVES METEORS COLLIDING WITH SATURN'S RINGS WASHINGTON -- NASA's Cassini spacecraft has provided the first direct evidence of small meteoroids breaking into streams of rubble and crashing into Saturn's rings. These observations make Saturn's rings the only location besides Earth, the moon, and Jupiter where scientists and amateur astronomers have been able to observe impacts as they occur. Studying the impact rate of meteoroids from outside the Saturn system helps scientists understand how different planet systems in the solar system formed. Our solar system is full of small, speeding objects. Planetary bodies frequently are pummeled by them. The meteoroids at Saturn range from about one-half inch to several yards (1 centimeter to several meters) in size. It took scientists years to distinguish tracks left by nine meteoroids in 2005, 2009 and 2012. Details of the observations appear in a paper in the Thursday edition of Science. Results from Cassini already have shown Saturn's rings act as very effective detectors of many kinds of surrounding phenomena, including the interior structure of the planet and the orbits of its moons. For example, a subtle but extensive corrugation that ripples 12,000 miles (19,000 kilometers) across the innermost rings tells of a very large meteoroid impact in 1983. "These new results imply the current-day impact rates for small particles at Saturn are about the same as those at Earth-- two very different neighborhoods in our solar system, and this is exciting to see," said Linda Spilker, Cassini project scientist at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif. "It took Saturn's rings acting like a giant meteoroid detector -- 100 times the surface area of the Earth -- and Cassini's long-term tour of the Saturn system to address this question." The Saturnian equinox in summer 2009 was an especially good time to see the debris left by meteoroid impacts. The very shallow sun angle on the rings caused the clouds of debris to look bright against the darkened rings in pictures from Cassini's imaging science subsystem. "We knew these little impacts were constantly occurring, but we didn't know how big or how frequent they might be, and we didn't necessarily expect them to take the form of spectacular shearing clouds," said Matt Tiscareno, lead author of the paper and a Cassini participating scientist at Cornell University in Ithaca, N.Y. "The sunlight shining edge-on to the rings at the Saturnian equinox acted like an anti-cloaking device, so these usually invisible features became plain to see." Tiscareno and his colleagues now think meteoroids of this size probably break up on a first encounter with the rings, creating smaller, slower pieces that then enter into orbit around Saturn. The impact into the rings of these secondary meteoroid bits kicks up the clouds. The tiny particles forming these clouds have a range of orbital speeds around Saturn. The clouds they form soon are pulled into diagonal, extended bright streaks. "Saturn's rings are unusually bright and clean, leading some to suggest that the rings are actually much younger than Saturn," said Jeff Cuzzi, a co-author of the paper and a Cassini interdisciplinary scientist specializing in planetary rings and dust at NASA's Ames Research Center in Moffett Field, Calif. "To assess this dramatic claim, we must know more about the rate at which outside material is bombarding the rings. This latest analysis helps fill in that story with detection of impactors of a size that we weren't previously able to detect directly." The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. JPL manages the Cassini-Huygens mission for NASA's Science Mission Directorate in Washington. JPL designed, developed and assembled the Cassini orbiter and its two onboard cameras. The imaging team consists of scientists from the United States, England, France and Germany. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For images of the impacts and information about Cassini, visit: http://www.nasa.gov/cassini -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 Collection sale, Allende Slice from the King Collection
Hi I am selling a few items from my collection over the next few months ALLENDE 37.1g Full Slice from the collection of Dr E.A.King,comes with a Certificate of Authenticity issued by the International Meteorite Brokerage Inc. Price $525 NWA 470g Thumbprinted Fully Crusted Individual,originally bought from Meteorite Recon,come with original labels Price $475 NWA 165g Fully crusted Individual,nice shape,originally bought from Meteorite Recon,comes with original labels Price $225 Price includes shipping with a tracking number and payment to made via Paypal only Anybody interested email me off list for photos etc. Thanks for looking __ 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] Meteorite Additive
Hi List, Adam said he didn't think this post made it to the Listees that were posting regarding the use of meteorite dust in certain applications, so I'm re-posting with an apology. Count Deiro IMCA 3536 MetSoc Hi Adam, Now I know why that beauty you recently enchained finally said yes. I'm trying desperately to stay on topic here, but I must reveal that my successful experiments involving the aphrodisiatic benefits of meteorite dust include dispensing copious amounts of Mum's extra brut to the distaff side whilst imbibing a tenth of a gram of any 1AB I can get a hold ofand a Viagra. Cordially, Guido __ 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] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: NWA 4522 Contributed by: Gregor Hoeher 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
