[meteorite-list] "Slide Show" just posted by the University of Arizona
Hello Everyone: University of Arizona News just posted the following slide show about meteorites featuring our own Dolores Hill! http://uanews.org/node/45837 Enjoy. Larry Lebofsky > > Latest approach to dealing with asteroids... > > http://www.strath.ac.uk/press/newsreleases/headline_602313_en.html > > Of course, this could mean, no more meteorites... > > > Pioneering engineers at the University of Strathclyde in Glasgow are > developing an innovative technique based on lasers that could radically > change asteroid deflection technology. > > > The research has unearthed the possibility of using a swarm of relatively > small satellites flying in formation and cooperatively firing > solar-powered lasers onto an asteroid â this would overcome the > difficulties associated with current methods that are focused on large > unwieldy spacecraft. > > > Dr Massimiliano Vasile, of Strathclydeâs Department of Mechanical and > Aerospace Engineering, is leading the research. He said: âThe approach > we are developing would involve sending small satellites, capable of > flying in formation with the asteroid and firing their lasers targeting > the asteroid at close range. > > âThe use of high power lasers in space for civil and commercial > applications is in its infancy and one of the main challenges is to have > high power, high efficiency and high beam quality all at the same time. > > âThe additional problem with asteroid deflection is that when the laser > begins to break down the surface of the object, the plume of gas and > debris impinges the spacecraft and contaminates the laser. However, our > laboratory tests have proven that the level of contamination is less than > expected and the laser could continue to function for longer than > anticipated.â > > Just over 100 years ago a 2000-kilometer area of vegetation was destroyed > when an object believed to be 30-50 metres in diameter exploded in the > skies above Tunguska, Siberia. While the likelihood of an immediate threat > from a similar asteroid strike remains low, it is widely recognised that > researching preventative measures is of significant importance. > > Dr Vasile added: âThe Tunguska class of events are expected to occur > within a period of a few centuries. Smaller asteroids collide with Earth > more frequently and generally burn in the atmosphere although some of them > reach the ground or explode at low altitude potentially causing damage to > buildings and people. > > âWe could reduce the threat posed by the potential collision with small > to medium size objects using a flotilla of small agile spacecraft each > equipped with a highly efficient laser which is much more feasible than a > single large spacecraft carrying a multi mega watt. Our system is > scalable, a larger asteroid would require adding one or more spacecraft to > the flotilla, and intrinsically redundant - if one spacecraft fails the > others can continue.â > > Dr Vasile is now investigating the use of the same concept to remove space > debris. The number of objects in orbit classified as debris is > ever-increasing and with no widely accepted solution for their removal. > Researchers at the University of Strathclyde believe the space-borne > lasers could be used to lower the original orbit of the space debris and > reduce the congestion. > > Dr Vasile said: âThe amount of debris in orbit is such that we might > experience a so called Kessler syndrome â this is when the density > becomes so high that collisions between objects could cause an > exponentially increasing cascade of other collisions. > > âWhile there is significant monitoring in place to keep track of these > objects, there is no specific system in place to remove them and our > research could be a possible solution. > > âA major advantage of using our technique is that the laser does not > have to be fired from the ground. Obviously there are severe restrictions > with that process as it has to travel through the atmosphere, has a > constrained range of action and can hit the debris only for short arcs.â > > The research was carried out in collaboration with the University of > Strathclydeâs Institute of Photonics and was presented to the Planetary > Society at the end of February.  > > 25 March 2012 > > DRVann > > __ > > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Canyon Diablo Meteorite - quick sale
Hello, I am trying to sell a cleaned canyon diablo meteorite - it has a glenn huss # and weighs 5,025 grams. I will accept $1300 shipped. Email for pictures. -Bill __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] "Slide Show" just posted by the University of Arizona
Wow! Makes me want to upgrade my thin section viewing equipment. Very nice presentation. Dennis Miller > Date: Thu, 5 Apr 2012 04:28:11 -0700 > From: lebof...@lpl.arizona.edu > To: meteorite-list@meteoritecentral.com > Subject: [meteorite-list] "Slide Show" just posted by the University of > Arizona > > Hello Everyone: > > University of Arizona News just posted the following slide show about > meteorites featuring our own Dolores Hill! > > http://uanews.org/node/45837 > > Enjoy. > > Larry Lebofsky > > > > > Latest approach to dealing with asteroids... > > > > http://www.strath.ac.uk/press/newsreleases/headline_602313_en.html > > > > Of course, this could mean, no more meteorites... > > > > > > Pioneering engineers at the University of Strathclyde in Glasgow are > > developing an innovative technique based on lasers that could radically > > change asteroid deflection technology. > > > > > > The research has unearthed the possibility of using a swarm of relatively > > small satellites flying in formation and cooperatively firing > > solar-powered lasers onto an asteroid – this would overcome the > > difficulties associated with current methods that are focused on large > > unwieldy spacecraft. > > > > > > Dr Massimiliano Vasile, of Strathclyde’s Department of Mechanical and > > Aerospace Engineering, is leading the research. He said: “The approach > > we are developing would involve sending small satellites, capable of > > flying in formation with the asteroid and firing their lasers targeting > > the asteroid at close range. > > > > “The use of high power lasers in space for civil and commercial > > applications is in its infancy and one of the main challenges is to have > > high power, high efficiency and high beam quality all at the same time. > > > > “The additional problem with asteroid deflection is that when the laser > > begins to break down the surface of the object, the plume of gas and > > debris impinges the spacecraft and contaminates the laser. However, our > > laboratory tests have proven that the level of contamination is less than > > expected and the laser could continue to function for longer than > > anticipated.� > > > > Just over 100 years ago a 2000-kilometer area of vegetation was destroyed > > when an object believed to be 30-50 metres in diameter exploded in the > > skies above Tunguska, Siberia. While the likelihood of an immediate threat > > from a similar asteroid strike remains low, it is widely recognised that > > researching preventative measures is of significant importance. > > > > Dr Vasile added: “The Tunguska class of events are expected to occur > > within a period of a few centuries. Smaller asteroids collide with Earth > > more frequently and generally burn in the atmosphere although some of them > > reach the ground or explode at low altitude potentially causing damage to > > buildings and people. > > > > “We could reduce the threat posed by the potential collision with small > > to medium size objects using a flotilla of small agile spacecraft each > > equipped with a highly efficient laser which is much more feasible than a > > single large spacecraft carrying a multi mega watt. Our system is > > scalable, a larger asteroid would require adding one or more spacecraft to > > the flotilla, and intrinsically redundant - if one spacecraft fails the > > others can continue.� > > > > Dr Vasile is now investigating the use of the same concept to remove space > > debris. The number of objects in orbit classified as debris is > > ever-increasing and with no widely accepted solution for their removal. > > Researchers at the University of Strathclyde believe the space-borne > > lasers could be used to lower the original orbit of the space debris and > > reduce the congestion. > > > > Dr Vasile said: “The amount of debris in orbit is such that we might > > experience a so called Kessler syndrome – this is when the density > > becomes so high that collisions between objects could cause an > > exponentially increasing cascade of other collisions. > > > > “While there is significant monitoring in place to keep track of these > > objects, there is no specific system in place to remove them and our > > research could be a possible solution. > > > > “A major advantage of using our technique is that the laser does not > > have to be fired from the ground. Obviously there are severe restrictions > > with that process as it has to travel through the atmosphere, has a > > constrained range of action and can hit the debris only for short arcs.� > > > > The research was carried out in collaboration with the University of > > Strathclyde’s Institute of Photonics and was presented to the Planetary > > Society at the end of February.  > > > > 25 March 2012 > > > > DRVann > > > > __ > > > > Visit the Archives at > > http://www.meteoritecentral.com/mailing-list-archives.html > > Meteorite-list mailing list > >
Re: [meteorite-list] "Slide Show" just posted by the University of Arizona
Hi, Larry, Very well done! I'd like to hear more about the extrasolar particles discovered. The most I've ever come across at one time is no more than a few sentences. I assume those particles would predate the solar content? Best, Pete > Date: Thu, 5 Apr 2012 04:28:11 -0700 > From: lebof...@lpl.arizona.edu > To: meteorite-list@meteoritecentral.com > Subject: [meteorite-list] "Slide Show" just posted by the University of > Arizona > > Hello Everyone: > > University of Arizona News just posted the following slide show about > meteorites featuring our own Dolores Hill! > > http://uanews.org/node/45837 > > Enjoy. > > Larry Lebofsky > > > > > Latest approach to dealing with asteroids... > > > > http://www.strath.ac.uk/press/newsreleases/headline_602313_en.html > > > > Of course, this could mean, no more meteorites... > > > > > > Pioneering engineers at the University of Strathclyde in Glasgow are > > developing an innovative technique based on lasers that could radically > > change asteroid deflection technology. > > > > > > The research has unearthed the possibility of using a swarm of relatively > > small satellites flying in formation and cooperatively firing > > solar-powered lasers onto an asteroid – this would overcome the > > difficulties associated with current methods that are focused on large > > unwieldy spacecraft. > > > > > > Dr Massimiliano Vasile, of Strathclyde’s Department of Mechanical and > > Aerospace Engineering, is leading the research. He said: “The approach > > we are developing would involve sending small satellites, capable of > > flying in formation with the asteroid and firing their lasers targeting > > the asteroid at close range. > > > > “The use of high power lasers in space for civil and commercial > > applications is in its infancy and one of the main challenges is to have > > high power, high efficiency and high beam quality all at the same time. > > > > “The additional problem with asteroid deflection is that when the laser > > begins to break down the surface of the object, the plume of gas and > > debris impinges the spacecraft and contaminates the laser. However, our > > laboratory tests have proven that the level of contamination is less than > > expected and the laser could continue to function for longer than > > anticipated.� > > > > Just over 100 years ago a 2000-kilometer area of vegetation was destroyed > > when an object believed to be 30-50 metres in diameter exploded in the > > skies above Tunguska, Siberia. While the likelihood of an immediate threat > > from a similar asteroid strike remains low, it is widely recognised that > > researching preventative measures is of significant importance. > > > > Dr Vasile added: “The Tunguska class of events are expected to occur > > within a period of a few centuries. Smaller asteroids collide with Earth > > more frequently and generally burn in the atmosphere although some of them > > reach the ground or explode at low altitude potentially causing damage to > > buildings and people. > > > > “We could reduce the threat posed by the potential collision with small > > to medium size objects using a flotilla of small agile spacecraft each > > equipped with a highly efficient laser which is much more feasible than a > > single large spacecraft carrying a multi mega watt. Our system is > > scalable, a larger asteroid would require adding one or more spacecraft to > > the flotilla, and intrinsically redundant - if one spacecraft fails the > > others can continue.� > > > > Dr Vasile is now investigating the use of the same concept to remove space > > debris. The number of objects in orbit classified as debris is > > ever-increasing and with no widely accepted solution for their removal. > > Researchers at the University of Strathclyde believe the space-borne > > lasers could be used to lower the original orbit of the space debris and > > reduce the congestion. > > > > Dr Vasile said: “The amount of debris in orbit is such that we might > > experience a so called Kessler syndrome – this is when the density > > becomes so high that collisions between objects could cause an > > exponentially increasing cascade of other collisions. > > > > “While there is significant monitoring in place to keep track of these > > objects, there is no specific system in place to remove them and our > > research could be a possible solution. > > > > “A major advantage of using our technique is that the laser does not > > have to be fired from the ground. Obviously there are severe restrictions > > with that process as it has to travel through the atmosphere, has a > > constrained range of action and can hit the debris only for short arcs.� > > > > The research was carried out in collaboration with the University of > > Strathclyde’s Institute of Photonics and was presented to the Planetary > > Society at the end of February.  > > > > 25 March 2012 > > > > DRVann > > > > __
[meteorite-list] Met Bulletin Update - Buck Mountains 005
Greetings Bulletin Watchers - One new meteorite was added today. It is an L6 chondrite found in Arizona. The full write-up can be seen at the following link : Linkage - http://www.lpi.usra.edu/meteor/metbull.php?code=55334 Best regards, MikeG -- --- Galactic Stone & Ironworks - MikeG Web: http://www.galactic-stone.com Facebook: http://www.facebook.com/galacticstone Twitter: http://twitter.com/GalacticStone RSS: http://www.galactic-stone.com/rss/126516 --- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Where is an admin when one is NEEDED?
Bob kindly wrote: "The more time goes by, the more things remain the same." No, Bob, you're wrong, ... meanwhile this saying has been updated a little by Bon Jovi ;-) = > The more things change the more the stay the sam e <= Best wishes and a very Happy Easter to All of you, Bernd __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Exploration Rover Opportunity Update: March 28 - April 3, 2012
http://marsrovers.jpl.nasa.gov/mission/status.html#opportunity OPPORTUNITY UPDATE: Small Wheel Spin and Steering Wiggle to Stabilize Left-Front Wheel - sols 2907-2913, March 28, 2012 - April 03, 2012: Opportunity is positioned on the north end of Cape York on the rim of Endeavour Crater with an approximate 15-degree northerly tilt for favorable solar energy production. The winter solstice (March 30, 2012) has now passed for the rover. Radio Doppler tracking passes for the geo-dynamic investigation were performed on Sols 2909 and 2912 (March 30 and April 2, 2012). Atmospheric argon measurements were performed with the Alpha Particle X-ray Spectrometer (APXS) on Sols 2907 and 2909 (March 28 and March 30, 2012). Additional Panoramic camera (Pancam) images were taken on several sols, along with a 360-degree Navigation camera (Navcam) panorama to be used to refine knowledge of the rover's attitude. The project is continuing to investigate the anomalies from Sol 2899 (March 20, 2012), that indicate apparent downward motion (of a few millimeters) of the left-front wheel and a stall in the robotic arm (Instrument Deployment Device, IDD). On Sol 2910 (March 31, 2012), a Quick Fine Attitude (QFA) was performed to establish the rover's attitude using the Sun along with the collection of additional Hazardous camera (Hazcam) imagery. No motion in the rover was observed when comparing these images to ones collected just after the anomalous wheel motion. However, the project is planning to stabilize the left-front wheel by performing a small wheel spin and a steering wiggle. These actions should remove any loose material under the wheel and relax any tension in the rover's suspension. A small dust cleaning event around Sol 2911 (April 1, 2012), improved the solar array dust factor by a few percent. As of Sol 2913 (April 3, 2012), solar array energy production was 321 watt-hours with an atmospheric opacity (Tau) of 0.521 and a solar array dust factor of 0.506. Total odometry is unchanged at 21.35 miles (34,361.37 meters). __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Where is an admin when one is NEEDED?
Me too! And a Happy Easter to you too, Bernd! -Original Message- >From: "Bernd V. Pauli" >Sent: Apr 5, 2012 4:21 PM >To: meteorite-list@meteoritecentral.com >Subject: [meteorite-list] Where is an admin when one is NEEDED? > >Bob kindly wrote: > >"The more time goes by, the more things remain the same." > >No, Bob, you're wrong, ... meanwhile this saying >has been updated a little by Bon Jovi ;-) > >= > The more things change the more the stay the sam e <= > >Best wishes and a very >Happy Easter to >All of you, > >Bernd > > >__ > >Visit the Archives at >http://www.meteoritecentral.com/mailing-list-archives.html >Meteorite-list mailing list >Meteorite-list@meteoritecentral.com >http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Met Bulletin Update - Buck Mountains 005
Hi all! I saw that last night. Interesting and Congrats to Denny Asher. I would like to know what makes BM005 different than Palo Verde Mine, which is about 0.8 miles away??? Or BM003 for that matter?? The geochemistry appears to be so close, they look to be the same! What would warrant a bulletin in this case??? I am missing something here! Jim Jim Wooddell http://k7wfr.us - Original Message - From: "Michael Gilmer" To: "Meteorite Mailing List" Sent: Wednesday, April 04, 2012 6:52 PM Subject: [meteorite-list] Met Bulletin Update - Buck Mountains 005 Greetings Bulletin Watchers - One new meteorite was added today. It is an L6 chondrite found in Arizona. The full write-up can be seen at the following link : Linkage - http://www.lpi.usra.edu/meteor/metbull.php?code=55334 Best regards, MikeG -- --- Galactic Stone & Ironworks - MikeG Web: http://www.galactic-stone.com Facebook: http://www.facebook.com/galacticstone Twitter: http://twitter.com/GalacticStone RSS: http://www.galactic-stone.com/rss/126516 --- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Where is an admin when one is NEEDED?
Dear Maundy Listers and everyone; Yes, I also hope everyone observes or enjoys a great week (or both!). Speaking of things changing, Bernd's post is a shot in the arm (Motivationsschub), as well as a couple other European listmembers as of late. I miss the European component of our lisr which seems to lessen as time goes on. Blame it on entropy in an ever more complex and enriched parallel & localized world, but I sincerely hope our friends residing in the Old World grace us with their of their plethora of kind comments like in days of yore. This music has always raised my spirit and I would *absolutely* love to see a meteorite video using it as the soundtrack, to show the marvels of all creation as many enthusiastic list members I know see them. http://www.youtube.com/watch?v=FNLDou-uChQ Kindest wishes Doug -Original Message- From: Bernd V. Pauli To: meteorite-list Sent: Thu, Apr 5, 2012 4:21 pm Subject: [meteorite-list] Where is an admin when one is NEEDED? Bob kindly wrote: "The more time goes by, the more things remain the same." No, Bob, you're wrong, ... meanwhile this saying has been updated a little by Bon Jovi ;-) = > The more things change the more the stay the sam e <= Best wishes and a very Happy Easter to All of you, Bernd __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
