Re: [meteorite-list] Meteorite Spoof Mocumentary up
Too funny!! An instant classic. Ranks right up there with Plan Nine from Outer Space. Humour on the List and on topic...what are people going to think? Regards to all the writers, producers, directors, actors and crew... Count Deiro IMCA -Original Message- From: Ruben Garcia mrmeteor...@gmail.com Sent: Sep 12, 2011 8:04 PM To: Marcin Cimala mar...@meteoryt.net Cc: McCartney Taylor mccart...@blackbearddata.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Meteorite Spoof Mocumentary up Very Good! Looks like a LOT of work... Thanks! On Mon, Sep 12, 2011 at 5:12 PM, Marcin Cimala mar...@meteoryt.net wrote: - Original Message - From: McCartney Taylor mccart...@blackbearddata.com To: meteorite-list@meteoritecentral.com Sent: Monday, September 12, 2011 10:53 PM Subject: [meteorite-list] Meteorite Spoof Mocumentary up http://www.youtube.com/watch?v=RQyLEbCdn8w Secret Dangers of Meteorite Hunting 8 minutes. PG rated. It is up! For those who want to know the dark underbelly of meteorite hunting, this is for you. The true dangers of meteorite hunters everywhere, in every country. Flamethrower and nades not included. Some dis-assembly required. hahaha this is the best. And special greetings to Pround Tom. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryty.pl marcin(at)meteoryty.pl http://www.PolandMET.com marcin(at)polandmet.com http://www.Gao-Guenie.com GSM: +48 (793) 567667 [ Member of Polish Meteoritical Society ] __ 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 -- Rock On! Ruben Garcia Website: http://www.mr-meteorite.net Articles: http://www.meteorite.com/blog/ Videos: http://www.youtube.com/profile?user=meteorfright#p/u __ 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] 8000BC Big Dipper Petroglyph: Evolution of star positions 2
Hello Mexico Doug, List, Thanks for the video. This concept of the evolution of the configuration of the stars of the Big Dipper is evidently widespread in China because it's even used in high-school teaching materials. This is why Wu Jiacai did not bother to list a source for his diagram of the evolution of the configuration from 100,000 BP to 12,000 AD. By the way, a stone originally owned by an antiquarian is claimed to be an even more ancient (150,000 yrs BP) map of the Big Dipper (http://61.128.162.70/stone/686/686.htm). Click once on the arrow below details (A), (b), and (C), and you see the current configuration of the Big Dipper; click a 2nd time, and you see the configuration 100,000 yrs in the future; click a 3rd time, and you see the configuration 100,000 yrs BP. One other figure in Wu Jiacai's scholarly article may interest astronomers; I've extracted and entitled it Full19-StarConfig.jpg at https://www.dropbox.com/gallery/18663629/1/Hongshan%20Cu15, 16, and 17 lture?h=bdfa66 It shows all 19 of the pockmarks on the rock that he regards as stars. The seven stars of the Big Dipper are linked by dotted lines. He says stars number 9, 10, 11, and 12 belong to Bootes, while 15, 16, and 17 are known as the Three Stars. To hazard a guess, the Three Stars may be epsilon, sigma and rho Bootis, known in China for a few thousand years as Genghe 1, 2, and 3, but of course he's talking about star positions 10,000 years ago. Lastly, he says that 13, 14, 16, 18, 19, and 20 are unknown as yet. Regards Robert A. Juhl, Tokyo __ 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] 8000BC Big Dipper Petroglyph: Evolution of star positions 2
Hi Robert, I'm assuming the 150,000 yrs BP is a typo, since the oldest known petroglyphs are about 12,000 years old and the first cave paintings date back 35,000 yrs. Phil Whitmer Joshua Tree Earth Space Museum --- Hello Mexico Doug, List, Thanks for the video. This concept of the evolution of the configuration of the stars of the Big Dipper is evidently widespread in China because it's even used in high-school teaching materials. This is why Wu Jiacai did not bother to list a source for his diagram of the evolution of the configuration from 100,000 BP to 12,000 AD. By the way, a stone originally owned by an antiquarian is claimed to be an even more ancient (150,000 yrs BP) map of the Big Dipper (http://61.128.162.70/stone/686/686.htm). Click once on the arrow below details (A), (b), and (C), and you see the current configuration of the Big Dipper; click a 2nd time, and you see the configuration 100,000 yrs in the future; click a 3rd time, and you see the configuration 100,000 yrs BP. One other figure in Wu Jiacai's scholarly article may interest astronomers; I've extracted and entitled it Full19-StarConfig.jpg at https://www.dropbox.com/gallery/18663629/1/Hongshan%20Cu15, 16, and 17 lture?h=bdfa66 It shows all 19 of the pockmarks on the rock that he regards as stars. The seven stars of the Big Dipper are linked by dotted lines. He says stars number 9, 10, 11, and 12 belong to Bootes, while 15, 16, and 17 are known as the Three Stars. To hazard a guess, the Three Stars may be epsilon, sigma and rho Bootis, known in China for a few thousand years as Genghe 1, 2, and 3, but of course he's talking about star positions 10,000 years ago. Lastly, he says that 13, 14, 16, 18, 19, and 20 are unknown as yet. Regards Robert A. Juhl, Tokyo __ 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] Ancient Constellations
Hi Folks - Which is better Red Shift or Starry Night for ancient skies? I don't know the technical difference between constellation and asterism except for one based on classical period constellations. I would suppose that for people today the Big Dipper and Little Dipper are constellations. Anyone one here work with Msyan astronomy? E.P. __ 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] Ancient Constellations, part 2
Hi all - I now have requests to work on 4 North American astronomical petroglyphs, so as you can imagine, I have to focus op those right now,.as well as I can, which is not that good now. But here's a few thoughts: Man used boats very very early on in his evolution, and thus did celestial navigation very early on. There has been very little work done on the evolution of these systems of constellations, which were also useful for land navigation as well. At this point, while everyone focuses on the easy analysis of lunar observations, my thinking is that the tracking of planets always played a major and important role. As comets entered and decayed, the night skies were very different at different points in time. E.P. __ 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] A Heads-Up: Rocks from Heaven (S T)
Hello Listees, Listoids, Listers, A heads-up for those of you who do not subscribe to Sky Telescope! Sky Telescope, October 2011, pp. 24-28: Meteorites in the Driveway Rocks from Heaven Canadians Scientists get a close look at a meteor as it breaks up over southern Ontario (by Philip Downey) - Lighting up the sky - Broken Windshield - Careful Calculations - Reconstructing the History Best wishes, 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] Wanted: NWA 6392
Hello, All, If anyone has a small slice of NWA 6392 for sale - less than 10 gms, please contact me off-List. Cheers, Pete __ 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] NASA'S Webb Telescope Completes Mirror Coating Milestone
Sept. 13, 2011 Trent J. Perrotto Headquarters, Washington 202-358-0321 trent.j.perro...@nasa.gov Lynn Chandler Goddard Space Flight Center, Greenbelt, Md. 301-286-2806 lynn.chandle...@nasa.gov RELEASE: 11-298 NASA'S WEBB TELESCOPE COMPLETES MIRROR COATING MILESTONE GREENBELT, Md. -- NASA's James Webb Space Telescope has reached a major milestone in its development. The mirrors that will fly aboard the telescope have completed the coating process at Quantum Coating Inc. in Moorestown, N.J. The telescope's mirrors have been coated with a microscopically thin layer of gold, selected for its ability to properly reflect infrared light from the mirrors into the observatory's science instruments. The coating allows the Webb telescope's infrared eyes to observe extremely faint objects in infrared light. Webb's mission is to observe the most distant objects in the universe. Finishing all mirror coatings on schedule is another major success story for the Webb telescope mirrors, said Lee Feinberg, NASA Optical Telescope Element manager for the Webb telescope at the agency's Goddard Space Flight Center in Greenbelt, Md. These coatings easily meet their specifications, ensuring even more scientific discovery potential for the Webb telescope. The Webb telescope has 21 mirrors, with 18 mirror segments working together as one large 21.3-foot (6.5-meter) primary mirror. The mirror segments are made of beryllium, which was selected for its stiffness, light weight and stability at cryogenic temperatures. Bare beryllium is not very reflective of near-infrared light, so each mirror is coated with about 0.12 ounce of gold. The last full size (4.9-foot /1.5-meter) hexagonal beryllium primary mirror segment that will fly aboard the observatory recently was coated, completing this stage of mirror production. The Webb telescope is the world's next-generation space observatory and successor to the Hubble Space Telescope. The most powerful space telescope ever built, the Webb telescope will provide images of the first galaxies ever formed, and explore planets around distant stars. It is a joint project of NASA, the European Space Agency and the Canadian Space Agency. Mirror manufacturing began eight years ago with blanks made out of beryllium, an extremely hard metal that holds its shape in the extreme cold of space where the telescope will orbit. Mirror coating began in June 2010. Several of the smaller mirrors in the telescope, the tertiary mirror and the fine steering mirror, were coated in 2010. The secondary mirror was finished earlier this year. Quantum Coating Inc. (QCI) is under contract to Ball Aerospace and Northrop Grumman. QCI constructed a new coating facility and clean room to coat the large mirror segments. QCI developed the gold coating for performance in certain areas, such as uniformity, cryogenic cycling, durability, stress and reflectance, in a two-year effort prior to coating the first flight mirror. In the process, gold is heated to its liquid point, more than 2,500 Fahrenheit (1,371 degrees Celsius), and evaporates onto the mirror's optical surface. The coatings are 120 nanometers, a thickness of about a millionth of an inch or 200 times thinner than a human hair. We faced many technical challenges on the Webb mirror coating program, said Ian Stevenson, director of coating at Quantum Coating. One of the most daunting was that all flight hardware runs had to be executed without a single failure. The mirror segments recently were shipped to Ball Aerospace in Boulder, Colo., where actuators are attached that help move the mirror. From there, the segments travel to the X-ray and Calibration Facility at NASA's Marshall Space Flight Center in Huntsville, Ala., to undergo a final test when they will be chilled to -400 Fahrenheit (-240 degrees Celsius). The last batch of six flight mirrors should complete the test by the end of this year. For images related to this story, visit: http://www.nasa.gov/topics/technology/features/webb-mirror-coating.html For more information about the Webb telescope, visit: http://jwst.nasa.gov -end- __ 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] Sundiving Comet
Space Weather News for Sept. 13, 2011 http://spaceweather.com SUNDIVING COMET: A comet is diving into the sun today. Just discovered by comet hunters Michal Kusiak of Poland and Sergei Schmalz of Germany in data from SOHO, the icy visitor from the outer solar system is expected to brighten to first magnitude before it disintegrates on Sept. 14th. Visit http://spaceweather.com today and tomorrow to follow the comet's death plunge. __ 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] Constellations vs. asterisms
I don't know the technical difference between constellation and asterism except for one based on classical period constellations. I would suppose that for people today the Big Dipper and Little Dipper are constellations. The reason the Big Dipper isn't a constellation is that it is only a subset of a constellation (Ursa Major). Similarly, the Great Square of Pegasus is an asterism. Going the other direction, the Summer Triangle is an asterism made up of three bright stars from three separate constellations. So think of asterisms as just easily recognizable star patterns. Constellations, on the other hand, are zones of the sky. --Rob __ 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] Denver show - Conception Junction pallasite AD
Hi List, Thank you for the overwhelming interest in the Conception Junction pallasite! We've shipped orders as quickly as possible and have been very excited about the enthusiasm for this new meteorite. We recently realized that a handful of monographs were printed by the publisher with four duplicate pages and, therefore, four missing pages. Please let us know if you received one of these, and we'll gladly replace it immediately. KEITH AND DANA JENKERSON WILL BE FEATURING THE CONCEPTION JUNCTION PALLASITE AT THE DENVER COLISEUM THIS WEEK ON THE ARENA FLOOR IN SPACE A1. IF YOU ARE IN TOWN, PLEASE STOP BY TO SEE US AND THIS EXCITING NEW METEORITE! For any who may have missed it, information about the Conception Junction pallasite can be found at www.conceptionjunctionpallasite.com Warm regards, Karl Aston IMCA # 6136 __ 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] Why did they not use the leftover propellantto heighten the orbit and push the rogue satellite into space?
You're second guessing your self Doug. You said: oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude No, you got it right the first time. You have to Decelerate the satellite to get it to fall out of orbit and burn up. And accelerate it to get it to climb up into a higher orbit. -- From: MexicoDoug mexicod...@aim.com Sent: Monday, September 12, 2011 9:39 AM To: mexicod...@aim.com; jim_brady...@o2.co.uk; meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Why did they not use the leftover propellantto heighten the orbit and push the rogue satellite into space? oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude -Original Message- From: MexicoDoug mexicod...@aim.com To: jim_brady611 jim_brady...@o2.co.uk; meteorite-list meteorite-list@meteoritecentral.com Sent: Mon, Sep 12, 2011 12:32 pm Subject: Re: [meteorite-list] Why did they not use the leftover propellant to heighten the orbit and push the rogue satellite into space? Its going a bit under 17,000 mph. Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude where gravity is still 75% what it is on earth's surface, and completely lost control of what happens after that since there is no fuel. Move it down 300 miles and you've burnt up already in the atmosphere, problem solved. It was a 340 miles altitude. The gravity is about 85% the value it is on earth there, or about 8.31 m/s2 (at sea level g=9.8 m/s2). They wouldn't have blasted it out very far considering it weighs 12,500 pounds. Just because you have cleared the atmosphere with a heavy duty launch vehicle doesn't mean you can just kick a little out of orbit with the limited onboard fuel tank. It is a misconception that there is no gravity in lower earth orbits. This is because of the weightlessness. The weightlessness is caused by the orbit being a continuous free fall where roughly no energy is required to maintain the orbit... just like being on a ride at an amusement park you feel reduced gravity: http://www.youtube.com/watch?v=4_YycEG4IkAfeature=related. If the satellite tried to stand still, it would burn its fuel out maintaining its altitude almost immediately. Of course, they could have done as you said and used it to raise the orbit until the fuel ran out. Then there would be no risk from fuel since it would be all gone. But it would still be there as space junk, intelligence information, and depending on how much propellant maybe decaying sooner rather than later anyway. Kindest wishes Doug -Original Message- From: jim_brady611 jim_brady...@o2.co.uk To: meteorite-list meteorite-list@meteoritecentral.com Sent: Mon, Sep 12, 2011 10:31 am Subject: [meteorite-list] Why did they not use the leftover propellant to heighten the orbit and push the rogue satellite into space? from Rons original posting ...When NASA decommissioned the 12,500-pound satellite in 2005, controllers used leftover propellant to lower its orbit from 340 miles to expedite its re-entry. Surely if they are already in orbit it would only take a tiny amount of fuel to push it completely out of orbit? can someone enlighten me please? The only thing I can guess is that it would endanger other satellites or possibly the ISS if they had propelled it away instead of towards the Earth. 2424 __ 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 __ 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] Why did they not use the leftover propellanttoheighten the orbit and push the rogue satellite into space?
Hi Dennis/Doug, You're both right, actually. In the counter-intuitive world of orbital mechanics, while an orbital burn in a direction opposite to the velocity vector decreases the orbital velocity at that point in the orbit, it actually increases the average orbital velocity over the entire orbit since the post-burn semi-major axis will be smaller. (The lower the semi-major axis, the faster the orbital period *and* the faster the average orbital velocity). So putting on the brakes, so to speak, actually speeds you up. --Rob -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Dennis Cox Sent: Tuesday, September 13, 2011 1:56 PM To: Meteorite List; MexicoDoug Subject: Re: [meteorite-list] Why did they not use the leftover propellanttoheighten the orbit and push the rogue satellite into space? You're second guessing your self Doug. You said: oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude No, you got it right the first time. You have to Decelerate the satellite to get it to fall out of orbit and burn up. And accelerate it to get it to climb up into a higher orbit. __ 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] Why did they not use the leftover propellantto heighten the orbit and push the rogue satellite into space?
Dennis, Probably you're right in this case, (and maybe even generally). I think I was answering two questions at the same time, since it is slowed down in a higher orbit and slowed down to de-orbit. The question was really, though, what is the first step taken. 1. When you raise an orbit, if it is circular you actually do slow it down. At higher altitudes, gravity is weaker,and that makes freefall slower to balance the forces for a stable orbit, if I'm not mistaken. 2. To de-orbit ---like preparing for a gentle landing---, you would also slow it down, yes, since the idea is to change from a circular to an arc of entry...but I believe (without thinking too hard) that the orbit itself will now deform, in terms of the orbit, probably by increasing the eccentricity and the new shaped will now be helpful in determining where you will make your entry into the zone of significant air resistance. Like taking a nose-dive into the atmosphere ... though I am thinking once the nose dive is taken this is where the velocity will really increase since the situation is now dynamic(which was the reason for my answer you are commenting on). But whether it increases or decreases will be determined by the point along the orbit that you fall since the ellipse will have faster and slower points. Probably you could alsop speed it up and get a different ellipse that gets closer to the atmosphere than the original circular orbit. But that wouldn't usually make much sense if you wanted to land the satellite. Maybe to burn it up better, it would. The devil is in the details. (Third) guessing, slowing it down to de-orbit makes the orbit more elliptical and with this you you select the closer point along the new ellipse to aim the puncture of the atmosphere (begin re-entry) where air is thick enough to catch it and dampen the remaining energy, like a calculated ripping through a spiders web. If you raise a circular orbit, you would thrust at a right angle to the orbital direction (up or radially) and the satellite must slow down through some transfers to gain a circular orbit at the higher altitude. Never had a toy satellite to play with ;-) but the mechanics of what to do aren't necessarily obvious when you go through more than one step in transfer orbits to achieve your goal. Thanks for pointing that out, it would be nice to see a graphic animation of this to better visualize it! Kindest wishes Doug -Original Message- From: Dennis Cox dragon-hun...@live.com To: Meteorite List meteorite-list@meteoritecentral.com; MexicoDoug mexicod...@aim.com Sent: Tue, Sep 13, 2011 4:56 pm Subject: Re: [meteorite-list] Why did they not use the leftover propellantto heighten the orbit and push the rogue satellite into space? You're second guessing your self Doug. You said: oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude No, you got it right the first time. You have to Decelerate the satellite to get it to fall out of orbit and burn up. And accelerate it to get it to climb up into a higher orbit. -- From: MexicoDoug mexicod...@aim.com Sent: Monday, September 12, 2011 9:39 AM To: mexicod...@aim.com; jim_brady...@o2.co.uk; meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Why did they not use the leftover propellantto heighten the orbit and push the rogue satellite into space? oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude -Original Message- From: MexicoDoug mexicod...@aim.com To: jim_brady611 jim_brady...@o2.co.uk; meteorite-list meteorite-list@meteoritecentral.com Sent: Mon, Sep 12, 2011 12:32 pm Subject: Re: [meteorite-list] Why did they not use the leftover propellant to heighten the orbit and push the rogue satellite into space? Its going a bit under 17,000 mph. Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude where gravity is still 75% what it is on earth's surface, and completely lost control of what happens after that since there is no fuel. Move it down 300 miles and you've burnt up already in the atmosphere, problem solved. It was a 340 miles altitude. The gravity is about 85% the value it is on earth there, or about 8.31 m/s2 (at sea level g=9.8 m/s2). They wouldn't have blasted it out very far considering it weighs 12,500 pounds. Just because you have cleared the
[meteorite-list] ANSMET meteorites approved to the MetBul
List, if you haven't searched the MetBul lately it's worth searching right now. On Sept. 10 a slew of ANSMET finds were approved and posted, most all with fantastic pictures. http://www.lpi.usra.edu/meteor/metbull.php Best, Michael in so. Cal. __ 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] Why did they not use the leftover propellanttoheighten the orbit and push the rogue satellite into space?
Thank you and succinct and very well put Rob! I'm sorry I didn't get your post before replying to Dennis with mine and if you have any comments on it I'd appreciate them ... I agree there is counter intuition going on here. Sometimes taking it to the extreme helps me think about these sorts of things. So: Let's say you put on the brakes so hard that you stopped your satellite in in its tracks. Then what would happen to the orbit? Well, I guess it would be just like a linear spring expanding and contracting with the earth at the midpoint. In the real world that would just be a free fall smash. But if earth were a equal-sized double planet and no air resistence in between, and the satellite were perpendicular to their plane of orbit, you would just get it oscillating up and down between two points in the shared sky through the center of mass. Those points could be as far away as you wished. The further away they were, the slower the overall orbit average orbital speed would be...The closer they were, the faster the average orbital speed would be. That explains intuitively why average speed is slower for higher orbits, right or wrong, at least to me ;-) Kindest wishes Doug -Original Message- From: Matson, Robert D. robert.d.mat...@saic.com To: Dennis Cox dragon-hun...@live.com; Meteorite List meteorite-list@meteoritecentral.com; MexicoDoug mexicod...@aim.com Sent: Tue, Sep 13, 2011 5:13 pm Subject: RE: [meteorite-list] Why did they not use the leftover propellanttoheighten the orbit and push the rogue satellite into space? Hi Dennis/Doug, You're both right, actually. In the counter-intuitive world of orbital mechanics, while an orbital burn in a direction opposite to the velocity vector decreases the orbital velocity at that point in the orbit, it actually increases the average orbital velocity over the entire orbit since the post-burn semi-major axis will be smaller. (The lower the semi-major axis, the faster the orbital period *and* the faster the average orbital velocity). So putting on the brakes, so to speak, actually speeds you up. --Rob -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Dennis Cox Sent: Tuesday, September 13, 2011 1:56 PM To: Meteorite List; MexicoDoug Subject: Re: [meteorite-list] Why did they not use the leftover propellanttoheighten the orbit and push the rogue satellite into space? You're second guessing your self Doug. You said: oops: Slow it down 600 mph (to 16,400 mph) and burn up vs. speed it up 600 mph (to 17,600 mph) and get to an orbit 300 miles higher in altitude should read: Speed it up 600 mph (to 17,600 mph) and burn up vs. slow it down 600 mph (to 16,400 mph) and get to an orbit 300 miles higher in altitude No, you got it right the first time. You have to Decelerate the satellite to get it to fall out of orbit and burn up. And accelerate it to get it to climb up into a higher orbit. __ 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- offering for sale a killer eucrite breccia like none other!
Greetings list Members! Writing to introduce what I believe to be one of the wildest and most beautiful eucrites ever to fall to Earth. The pictures attached are of a center slice from this single beautiful mass. The slice weighs 121 grams. Slices from this stone range from 50 grams to 145 grams. We’ve also had three thick slices cut for museum curation. Last month Marlin Cilz and his lovely wife Debbie came to Lake Oswego for a visit during their vacation travels throughout the Northwest. While they were here visiting we opened up the vault and went through a number of stones and irons that show cutting potential. Among other items Marlin talked me into slicing and polishing a large piece of our “Super Green” NWA 6693 the pyroxenite. In Tucson this year I bought a large oriented achondrite. It was a huge gamble and a high priced purchase. But it was one of those times when instincts told me that it was something special. I really should not have made the investment but the stone was so beautiful that I figured that if it turned out to be an HED instead of planetary that I could at least maybe get the investment back by selling the oriented stone whole. We donated a large fragment taken from an already broken surface (78 grams) to UCLA for classification. The stone was classified as a eucrite (NWA 6694). This seemed to feel like a bit of a letdown. Now the vault was home to a very pretty, oriented, expensive, loaf of bread. Well, Marlin looked at this not so little gem and said; “why don’t you let me take a single cut off this side of the stone where it is already broken and it will clean up the stone, give you a good look at the inside and you can still sell the whole thing if that’s what you decide you want to do. A week later we were talking on the phone and while talking about other pieces Marlin was cutting for me I said “hey Marlin, how about just cutting the end off of that stone and then send me a picture of the cut face. He did that and when he emailed the picture it was one of those moments that one remembers forever, a definite Kodak moment. My favorite meteorite feature has always been breccia. I remember getting week in the knees the first time I saw Chico at UNM and the first time I saw Abee. I could not be happier to get to share this gorgeous meteorite with all of you. We are selling it and there are roughly twenty slices. So please feel free to contact me or Patrick off list for sizes and prices and pictures. Just minutes ago I got the long awaited phone call from my neurosurgeon’s office telling me that my back surgery is scheduled for next Tuesday September 20th. So this rock truly is a gift from Heaven. Hopefully it will help pay the medical bills. I also want to take this opportunity to publicly thank Darryl Pitt for all of his support and knowledge regarding this pending surgery and everything leading up to this time. I never dreamed that someone could talk me through the pain like Darryl has done. Instead of feeling like I am falling apart, Darryl has helped me to feel like this is just part of the program. Darryl has given me more answers and information than any ten doctors could have. He has been through exactly the same problem and repair. May the Heavens bless Darryl by dropping loads of gorgeous meteorites nearby. Not on him but nearby! Thanks man. Sincerest regards, Edwin etmeteori...@hotmail.com to reach me or for Patrick at; patr...@etmeteorites.com http://s1110.photobucket.com/albums/h443/etmeteorites/ The slice featured in photos here measures 3mm x 11cm x 15cm and weighs 121 grams P.S. I would also like to start a thread about this breccia and any other similar eucrites. I have looked everywhere I can think of looking and I have not been able to find any other eucrites that have a similar breccia. This list is a powerful resource of knowledge so I am asking all of you if any of you members have seen another eucrite like this one. I would imagine that there might be something similar found in antarctica but I can find no photographs. Has anyone seen anything like this? Maybe something that might be paired? Thanks, E.T. __ 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] 150,000 BP claim
Hello Phil, List, 150,000 yrs BP isn't a typo. The reason I pointed to this website (http://61.128.162.70/stone/686/686.htm) and mentioned the supposed antiquity of the rock with the Big Dipper configuration was to underscore the widespread acceptance in China of this concept of the evolution of the position of the stars of the Big Dipper [as repeated in diagrams (A), (b), and (C)]. It's used in teaching materials, for example. Apparently, the presence of this concept has led to the accommodation of exaggerated claims of antiquity as well as more modest claims. Regards Robert A. Juhl, Tokyo __ 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: For Dealers, Meteorite Cards wholesale and sponsorship offer
Attention Meteorite Dealers, I am happy to announce that our first series of 10 Meteorite Cards, the hot new collectible meteorite trading cards, have gone to the printer today and we are expecting to fill and ship the wholesale orders out the first of next week. Those of you who placed wholesale orders are going to be pleased! Individual packs will be available at retail from our network of resale dealers, or directly from us later next week. www.MeteoriteCards.com So now we are opening up reservations for Dealer Sponsorships for cards #11 through #20 which will be included in our Second Series, which we plan to deliver to our printer the first of next week. If there are any dealers that would like to sponsor a specific meteorite card in our next series, you can choose the meteorite you want to sponsor (as long as no one else has already selected it) now. You can even choose to feature your own specimen photos on the card (great provenance builder). The cost of sponsorship is only $100 for the entire 2011 season. Meaning we will print as many cards as the market demands this year, and each card you sponsor will have your website's name on it. As a bonus, our website's page with your sponsored card on it, will feature only one ad, and that will be your website's ad. So when people come to the site (via Google or elsewhere) if they visit your sponsored meteorite card's page, then they will be exposed to your ad there as well, even if they never see one of the paper cards. As an additional, limited time offer, sponsors of any of the next 10 cards, in this next series, will get as a free bonus, 20 Second Series packs of 10 cards (retail value of $99.90). So, buy a $100 ad, and get 100 bucks worth of cards (at retail) free. OR Buy 100 bucks worth of cards and get a free $100 ad! (Either way you want to look at it, it is a great deal!) In any case, the extra exposure of your favorite meteorite (especially if you stock that specimen for sale) could grow to be exponential. The sponsorships will sell on a first come first served basis, so we invite you to our site to check out the look of the cards and see if you want to promote your inventory through our medium, and join us in the 2nd series. Be sure to reserve your card's sponsorship before someone else does. ALSO, open to anyone: wholesale orders of Series 1 cards can be made NOW from the site as well. Especially if you have any outreach to the public, via rock shows, or public speaking, or any person to person contact, these Meteorite Card Packs can be a great money making product. Wholesale cost $2.50 per pack (in volume) and Suggested retail of $4.99 (however, if the desire of these cards takes off, you are not limited to sell them for only $4.99!) Or you can break open the packs and each card is very affordable for giving away for promotional purposes. In either case, dealers are encouraged to visit our site. www.MeteoriteCards.com Next week we will announce the retail sales of the individual packs of Meteorite Cards to the public, so stay tuned. Thanks, Steve Arnold Host of Meteorite Men Co-Founder of www.MeteoriteCards.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 150,000 BP claim or Geofact ??
In 150,000 BP claim at: http://six.pairlist.net/pipermail/meteorite-list/2011-September/079784.html Robert wrote, 150,000 yrs BP isn't a typo. The reason I pointed to this website (http://61.128.162.70/stone/686/686.htm) and mentioned the supposed antiquity of the rock with the Big Dipper configuration was to underscore the widespread acceptance in China of this concept of the evolution of the position of the stars of the Big Dipper [as repeated in diagrams (A), (b), and (C)]. It's used in teaching materials, for example. Apparently, the presence of this concept has led to the accommodation of exaggerated claims of antiquity as well as more modest claims. A geologist, who has seen various rounded pebbles and cobbles with identical circular markings on them, I wonder what evidence that they have for these markings as having been carved. The differential weathering of animal burrows in a sedimentary rock can easily produce circular markings that are identical to the ones that appear on the stone. The circles with connecting bar is what could easily be the eroded and differentially weathered cross- section of animals burrows (trace fossils), of which I have personally seen examples examples while doing field work. One real possibility is that someone unfamiliar with how specific types of trace fossils look like in cross-section on the eroded and differentially weathered surface of a stone has confused a natural trace fossil with manmade carvings. If so, this would not be the first time, that a nongeologist, when finding natural circular patterns on a stone jumped to the incorrect conclusion that it was manmade. For an example of how trace fossils have been confused by nongeologists with manmade artifacts can be seen in Artifacts or Geofacts? Alternative Interpretations of Items from the Gulf of Cambay at; http://members.cox.net/pyrophyllite/geofact.html My impression of this alleged 8000BC Big Dipper Petroglyph: Evolution of star positions is that it very well might be an geofact that has been misidentified as a petroglyph. Best wishes, Paul H. __ 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] ad- offering for sale a killer eucrite breccia like none other!
E. T. List, I love breccias too and this one is exceptional! I really like the scope and gained perspective when looking at the big slice represented in the last three pictures. Those may be the largest chunks I have ever seen. I can imagine the potential differences in individual meteorites that could result from a break up of this meteoroid as it enters the atmosphere. It might produce meteorites of completely separate litho's, sort of like Park Forest and others. Imagine if the only found meteorite was a small remnant of that real big chunk in the slice, the classification may have been a little different, still a eucrite perhaps, but chemically different as a whole than NWA 6694. It makes me wonder how many meteorites we have that are classified as something but are in actuality a small piece of a larger, brecciated body. Thought's? I noticed that many of the clast's in this larger slice are sort of rimmed, but not in a 'rimmed chondrule' sense. They look as if they have weathered in some manner, with the edges noticeably lighter than the interiors. They look similar to rocks with a weathering rind. Have the clasts 'weathered' into the immediate matrix? Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm -Original Message- From: Edwin Thompson etmeteori...@hotmail.com To: meteorite-list meteorite-list@meteoritecentral.com Sent: Tue, Sep 13, 2011 6:55 pm Subject: [meteorite-list] ad- offering for sale a killer eucrite breccia like none other! Greetings list Members! Writing to introduce what I believe to be one of the wildest and most beautiful eucrites ever to fall to Earth. The pictures attached are of a center slice from this single beautiful mass. The slice weighs 121 grams. Slices from this stone range from 50 grams to 145 grams. We’ve also had three thick slices cut for museum curation. Last month Marlin Cilz and his lovely wife Debbie came to Lake Oswego for a visit during their vacation travels throughout the Northwest. While they were here visiting we opened up the vault and went through a number of stones and irons that show cutting potential. Among other items Marlin talked me into slicing and polishing a large piece of our “Super Green” NWA 6693 the pyroxenite. In Tucson this year I bought a large oriented achondrite. It was a huge gamble and a high priced purchase. But it was one of those times when instincts told me that it was something special. I really should not have made the investment but the stone was so beautiful that I figured that if it turned out to be an HED instead of planetary that I could at least maybe get the investment back by selling the oriented stone whole. We donated a large fragment taken from an already broken surface (78 grams) to UCLA for classification. The stone was classified as a eucrite (NWA 6694). This seemed to feel like a bit of a letdown. Now the vault was home to a very pretty, oriented, expensive, loaf of bread. Well, Marlin looked at this not so little gem and said; “why don’t you let me take a single cut off this side of the stone where it is already broken and it will clean up the stone, give you a good look at the inside and you can still sell the whole thing if that’s what you decide you want to do. A week later we were talking on the phone and while talking about other pieces Marlin was cutting for me I said “hey Marlin, how about just cutting the end off of that stone and then send me a picture of the cut face. He did that and when he emailed the picture it was one of those moments that one remembers forever, a definite Kodak moment. My favorite meteorite feature has always been breccia. I remember getting week in the knees the first time I saw Chico at UNM and the first time I saw Abee. I could not be happier to get to share this gorgeous meteorite with all of you. We are selling it and there are roughly twenty slices. So please feel free to contact me or Patrick off list for sizes and prices and pictures. Just minutes ago I got the long awaited phone call from my neurosurgeon’s office telling me that my back surgery is scheduled for next Tuesday September 20th. So this rock truly is a gift from Heaven. Hopefully it will help pay the medical bills. I also want to take this opportunity to publicly thank Darryl Pitt for all of his support and knowledge regarding this pending surgery and everything leading up to this time. I never dreamed that someone could talk me through the pain like Darryl has done. Instead of feeling like I am falling apart, Darryl has helped me to feel like this is just part of the program. Darryl has given me more answers and information than any ten doctors could have. He has been through exactly the same problem and repair. May the Heavens bless Darryl by dropping loads of gorgeous meteorites nearby. Not on him but nearby! Thanks man. Sincerest regards, Edwin etmeteori...@hotmail.com to reach me or for Patrick at;
[meteorite-list] abstracts available for INQUA Session 60 The enigmatic Younger Dryas climatic episode, July 2011 Bern, Switzerland -- two by Malcolm LeCompte: Rich Murray 2011.09.13
abstracts available for INQUA Session 60 The enigmatic Younger Dryas climatic episode, July 2011 Bern, Switzerland -- two by Malcolm LeCompte: Rich Murray 2011.09.13 http://rmforall.blogspot.com/2011/09/abstracts-available-for-inqua-session.html http://www.inqua2011.ch/?a=programmesubnavi=abstractid=1813sessionid=60 Abstract Details ID: 1813 Title: Unusual material in early Younger Dryas age sediments and their potential relevance to the YD Cosmic Impact Hypothesis Session: 60 The enigmatic Younger Dryas climatic episode Authors: Malcolm LeCompte Albert Goodyear Mark Demitroff Dale Batchelor Edward Vogel Charles Mooney Barry Rock Presenter: Malcolm LeCompte Type:oral Content: The cause of the abrupt Younger Dryas (YD) climate change with its North American megafauna extinctions, population bottlenecks, and cultural disappearance remains enigmatic. Iron- and silica-rich magnetic spherules reported from Younger Dryas Boundary (YDB) sediments and dated to the stadial’s onset were interpreted by some as cosmic impact relicts. They interpreted Northern Hemisphere YDB spherules as either impact ablation accumulations or ejecta. Others, claiming adherence to the same protocol, reported an inability to find spherule enhancement in YDB strata. We review spherule identification and counting methodology of two opposing studies. An independent blind-test examination was conducted using samples from two pre-YD occupation sites common to both studies: Blackwater Draw, NM, and Topper, SC. At Topper, samples were taken from sediments located above, adjacent to, and at the Clovis artifact debitage layer. Absence of overlying debitage indicates a multi-century hiatus in human activity before successor culture reoccupation. We found increased spherule abundance in YDB strata at both common sites. We also report spherules present in YD-age sediment from Paw-Paw Cove, MD, contrary to its reported absence. Spherule geochemistry reflects similar iron, titanium, aluminosilicate, oxygen, and carbon content at three widely separated sites. Spherules with elevated concentrations of rare earth elements including Cerium, Lanthanum, and Praseodymium are occasionally detected. Our spherule positive results are consistent with the YD Cosmic Impact Hypothesis study that found similar spherule composition and increased abundances in YDB sediments. Earlier negative results appear due to non-adherence of grain-size sorting protocol and subsequent examination of smaller than recommended aliquots. Size sorting mitigates neurocognitive factors making optical microspherule searches much less labor intensive. http://www.inqua2011.ch/?a=programmesubnavi=abstractid=3134sessionid=60 ID: 3134 Title: Carolina Bays: Younger Dryas Time Capsules Session: 60 The enigmatic Younger Dryas climatic episode Authors: Malcolm LeCompte Kiara Jones LaEsha Barnes Ryan Lawrence Cedric Hall MyAsia Reid Devina Hughes Leroy Lucas Mark Demitroff David Kimbel Presenter: Malcolm LeCompte Type: poster Content: Cold, dry, windy conditions prevailed far south of the Laurentide Ice Sheet during glacial epochs. A half-million, similarly aligned, elliptically shaped, shallow depressions or Carolina Bays are artifacts of potent Pleistocene geomorphic forces. We assume Bay formation by strong late Pleistocene winds deflating loose sandy sediments to create hollows or blowouts. Episodic modification continued into the early Holocene when dry, windy periods alternated with wet, calm periods. Windblown and water-borne sediments repeatedly filled Bay bottoms. Their fill became a layered repository of transported material; time capsules for post LGM history. OSL, 14C dating, pollen analysis, and cultural assemblages have been used to date Bays. Rockyhock, Chowan County, NC and Kimbel, Cumberland County, NC, provide an opportunity to examine Younger Dryas paleoenvironmental conditions and test the Younger Dryas Impact hypothesis. Both Bays were surveyed using Ground Penetrating RADAR to evaluate subsurface structure. Sediment composition differs between Bays; Rockyhock contains fluvial sediments, while Kimbel is primarily aeolian fill. Kimbel Bay’s windblown sediments contain significant quantities of potential impact markers including: nanodiamonds, carbon spherules, glasslike carbon, charcoal, and magnetic spherules. Their exact chronostratigraphic significance remains undetermined. Rockyhock Bay’s fluvial sediments contain only a very few magnetic spherules in rim sediments. Carbon spherules, glasslike carbon, and charcoal were not found with analysis of bay center samples pending. A relationship is probable between wind action and impact marker abundance. Marker concentration may be enhanced by complex size segregation dynamics during eolian activity. Bay floors with bounding surfaces could be described as traps that collected otherwise rare and widely scattered soil constituents. http://nia.ecsu.edu/sp/staff/lecompte/cv.html Malcolm A. LeCompte Campus
