[meteorite-list] PolandMET Tucson final annoucement
Hello List I will stay in hotel Best Western Executive Inn, 333 West Drachman Street, room 146 (not yet confirmed) together with Minerva mineral dealer from Poland. This is located very close to InnSuite. Phone to hotel is: 323 7917551 Contact with me after fair time (morning, evening) will be possible by phone 323 537 30 64. This is my friend Krzysztof mobil phone. We stay together in the same rent house few kilometers outside downtown. This will be my night HQ. Im still working on to get a place in InnSuite so maybe I will change my location after few days from arrive to Tucson. But for now Best Western is my official location. I will get with me most of my meteorite stuff, together with some new meteorites like CH3 and eucrites. You can also have a chance to check if Morasko is a ruster or not and if it still have fussion crust :) I hope to meet in person all of You there. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] COMET McNAUGHT IS STILL VISIBLE IN DAYLIGHT!
This brings up a question to all. Did anyone down south of the equator see this [comet] in broad daylight from 01/12 to 01/16? All the reports I have thus far seen are from the north. It should have been easily seen in broad daylight down there as the sun would be higher in a blue sky. Hello Steve, Please correct me if I've not understood your statement but, this is not appreciably true. Lets say you have in 2 km elevation Flagstaff a view with the Sun at 33º high in the sky (only one third above the horizon=0º to the zenith=90º). And lets compare that to a location down south near the tropic of Capricorn (where the Sun is at a neckbreaking 88º altitude, basically at the zenith). Call that place Rio's Ipanema Beach, at sea level. Both locations have a similar loss of magnitude, just about 0.3. Actually Flagstaff is a little better off by a few percent. So in both places, the comet would appear to be -4.7 magnitude instead of the true e.g., -5.0, from sitting on top of the atmosphere like Hubble. The point is, with something this bright, the difference is much more sensitive to other things and you have minimal loss. Even if the comet were at the exact zenith and you were 2,000 meters above Rio, you would still lose 0.2 magnitudes - after all you can only do so well from the soup we live in and it is a light contaminated, polluted muck once you are outside the fishbowl looking in... The moral of this is that few people in Arizona (well, Phoenix probably realizes the way it was) and New Mexico know just how uniquely lucky they are. When we start to factor seeing, dust and humidity into the equation you guys are basically on the top of the world as you have an especially cooperative airmass on top of you. Plus, I suspect that the greater magnitude of the Sun in a zenith situation - takes its toll on contrast with our poor eyes as well making it at best a wash. Btw, plenty of folks saw it in the Southern Hemisphere during the day and twilight, though everyone had to put up with the same 5-7º angular separation from the Sun from our little Blue Spaceship Dot, the comet being 120 million kilometers away. The tail has improved somewhat apparently. (Thus - Arizona highlands was just about the finest place to be, all things considered). It apparently gave the Ozies quite a show in Perth last evening - like you northerners had. But the Northern hemisphere really got first dibs on this comet. Did you know if you were in Barrow, Alaska you could have watched the comet rise and set from about 9 am to 5 pm every day for the first two weeks of January - and even had to worry about the Sun, because it won't be rising there until say, January 23. Might be a wee bit nippy, but I think that the coinciding of a comet rising and setting instead of the Sun is the stuff of legends that turn men's bones into stones...And, we're meteorite hunters (I read Gallant's book, too and am a little hyper), the (-) 26º below zero FAHRENHEIT (-32ºC) right now would be good practice for Antarctica, or maybe even Dave's Wyoming... It got up to -14ºF (-26ºC) yesterday in Barrow which was typical for the high-noon comet a few days earlier. Good health, Doug PS, you can still see the Comet's tail after Sunset from your skies - hope you check this out. Did you know the Comet is the largest object in the Solar System at the moment, a mere 10-20 million kilometers long and with a tail wider than the Sun? From: Steve Schoner [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: meteorite-list@meteoritecentral.com Sent: Wednesday, January 17, 2007 9:32 AM Subject: Re: [meteorite-list] COMET McNAUGHT IS STILL VISIBLE IN DAYLIGHT! Hello all, Don't know why my report of my last daylight sighting of this comet (01/16/07) did not go through, so I post again. I was very impressed to have spotted it yesterday in Flagstaff's clear blue skies, and I had some of my co-workers come out and confirm my sightings. They were just as amazed as me to have seen it. I also pointed out Venus well to the left and up above it which they also spotted as well. They were amazed that I pointed it out as they had no idea that one could actually see a planet in broad daylight. In regards to Comet McNaught the forward scatter is rapidly vanishing and it is very unlikely that it will be seen today by anyone in broad daylight (unless you are on a very high mountain with very clear skies). I will give it my last try this afternoon. If I can't see it with my naked eyes, I won't try with binoculars as it is too dangerous to look anywhere near the sun. This brings up a question to all. Did anyone down south of the equator see this in broad daylight from 01/12 to 01/16? All the reports I have thus far seen are from the north. It should have been easily seen in broad daylight down there as the sun would be higher in a blue sky. Steve Schoner IMCA #4470 __ Meteorite-list mailing list
Re: [meteorite-list] Tired of winter? Not headed for Tucson soon?
Hi Dave: My last two emails to the list have failed to get through; do not know the problem. If you get this, but not a second copy from the list, please send it on. We had a cold spell earlier this week (lows in the upper 20s), but it has warmed up a bit (may get rain this weekend and I have a girlscout overnight and two evening teacher workshops, where we are to observe the night sky). However, by the start of the show we should be back up to the upper 30s/low 40s at night and mid 60s during the day (not bad). By the way, nice picture of where I work (off the picture to the right) and my house, just about in the middle of the picture, but probably hidden by the trees :-). Larry On Tue, January 16, 2007 5:53 pm, Dave Freeman mjwy wrote: Dear List; Not going to Tucson? How about a fast trip today? Here is a photo web look at Tucson today! The high here in RS WY was 6 degrees. Sunny Catalina Mtns. Tucson, AZ. Best, Dave F. http://www.cs.arizona.edu/camera/week.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rocks From Space Picture of the Day
http://www.spacerocksinc.com/January_18.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] COMET McNAUGHT like COMET WEST
Amazing COMET! COMET McNAUGHT is just reverse COMET WEST in 1976! http://spaceweather.com/comets/mcnaught/17jan07/Crause2.jpg http://www.spacew.com/gallery/image005564.html Katsuhito Tokyo, JAPAN __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Lowicz wanted
Hi Im looking for Lowicz specimen. If anyone have something nice, please let me know. We can meet in Tucson and do bussines :) -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] COMET McNAUGHT like COMET WEST
http://www.spacew.com/gallery/image005564.html That has to be one of the top 10 astronomy photos of the last decade. Simply Stunning! Mark -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of K. Ohtsuka Sent: 18 January 2007 12:47 To: Meteorite Mailing List Subject: [meteorite-list] COMET McNAUGHT like COMET WEST Amazing COMET! COMET McNAUGHT is just reverse COMET WEST in 1976! http://spaceweather.com/comets/mcnaught/17jan07/Crause2.jpg http://www.spacew.com/gallery/image005564.html Katsuhito Tokyo, JAPAN __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tom Phillips NWA 482 Thin Sections
Tom Phillips NWA 482 Thin Sections - amazing micrographs just added to my website; http://www.meteorite-dealers.com/thinsections-tomphillips-nwa482.html Gary __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Anita's poem
And never found the grommet. and Should I look up or down? Two of your best ever lines Anita. Jerry Flaherty __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
http://allafrica.com/stories/200701170803.html Namibia: So Much Potential But Not Enough Funds Kuvee Kangueehi January 17, 2007 The Deputy Mayor of Grootfontein, Paulus Hangula, has revealed that the residents of his town owe the Town Council over N$26 million in water and electricity debts. Speaking to New Era over the weekend, Hangula said the Town Council is fighting a losing battle trying to recover the money, as many of the residents are unemployed and struggling with accumulated debts. The deputy mayor said that, apart from the high unemployment rate which is the primary factor behind the debts, alcohol and drug abuse is also rife. He noted that there are very few employment opportunities at the town, and most of the employed residents are members of the Namibia Defence Force (NDF) and are stationed at the military base. Hangula said other residents employed are civil servants, people working at the local shops and farm workers employed on the surrounding farms. Since the mining operations at Kombat and Tsumeb were scaled down, this has affected the town's cash flow. He complained that most of the commercial farmers in the area invest little money in the town and spend their money instead at privately-owned businesses, resulting in the majority of the town's residents not benefiting from it. He noted, however, that everything is not all doom and gloom, as town has the great potential of becoming a big tourist attraction. Hangula said Grootfontein lies on the main roads, which connects Windhoek to the north-eastern part of Namibia including the Okavango and Caprivi regions. He stressed that, like Otavi and Tsumeb, Grootfontein is very green and during spring provides spectacular viewing. Grootfontein is really an ideal overnight stop if you are travelling to the Caprivi and Tsumkwe. Hangula pointed out that a special tourist attraction is the meteorite, which can be found on the farm Hoba, some 24 kilometres outside the town. One of the world's largest meteorites ever found, it is 3 metres long and one metre wide, weighs 50 tons, has a volume of 9 cubic metres, and hit the ground here some 8 years ago. The meteorite in Hoba consists of 82% iron, 16% nickel, 1% cobalt and various trace elements. With the passing of the years, the Hoba Meteorite has been somewhat reduced in size by visitors breaking off pieces to take home as souvenirs. The deputy mayor revealed that, despite the fact that many organizations educate people on HIV/Aids, the disease is still very rife at the town. He called on these organizations to intensify their campaigns and to apply different strategies in order to make them more effective. He said that although the rate of violent crimes is not very high at the town, vandalism is rife especially at schools, churches and other public places. Grootfontein has a population of approximately 1 people. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Saving Arecibo: Observatory's Radar and Unique Precision Make It A Vital Resource
http://www.news.cornell.edu/stories/Jan07/brown.arecibo.html Chronicle Online Saving Arecibo: Observatory's radar and unique precision make it a vital resource, argues NAIC director Jan. 18, 2007 By Lauren Gold [EMAIL PROTECTED] On Nov. 3 the Senior Review, an advisory panel to the National Science Foundation (NSF) Division of Astronomical Sciences, issued recommendations for the future of the Arecibo Observatory, which Cornell manages for the agency through the National Astronomy and Ionosphere Center (NAIC). Among the recommendations was a $2 million budget cut over the next three years, and advice that the NAIC find outside partners to cover half of Arecibo's total operating costs by 2011 or risk closure. Reactions from Cornell and Arecibo astronomers have run from deeply concerned to guardedly optimistic. Many acknowledge the competing need to fund promising new facilities. But above all is strong agreement about Arecibo's unique strengths, its decades-long lifespan and the importance of keeping it running well into the future. Robert Brown, NAIC director and adjunct professor of astronomy at Cornell, discussed the report's impact on the observatory in a recent interview. How serious is the threat of closure? My concern is that people will read the recommendation and expect that the observatory will close. It would be extremely serious if good people begin to leave the observatory for that reason. But personally I'm very optimistic that the future will be actually quite bright for the observatory. We have looked for external funding and have been successful for some specific programs. But there aren't foreign countries or institutions that say, boy, I'd sure like to cut the grass at the observatory or to pay the electrical bill. That said, it's to the advantage of the U.S. astronomy community for support to continue, and everyone understands that. Yes, the Senior Review had recommendations that are contrary to that point of view -- but the Senior Review is not the only forum in which these subjects are discussed. We believe that we can convince the next decadal survey [2008-2010] of the value of the observatory. What are the most compelling reasons for saving the observatory? The technology of the instruments used for astronomy has improved dramatically in recent years. The ability to discover objects in the sky has improved -- not just by a little bit, by a huge amount. So that means that astronomy has had a renaissance. It's basically started over again. The thrust of all modern observatories is surveys. In our case, we're surveying the sky looking for pulsars; for hydrogen in galaxies near but not in the Milky Way; and a third program looks to study hydrogen in the Milky Way. All in much greater detail than it has in the past. So what happens now? It's going to be a year filled with adventure. Institutionally, it's not all bad to say okay, our funding is going to decrease -- let's focus on the most important science we can do; let's do that well, and then we'll grow from there. It's not an unreasonable thing to do, and certainly we and the rest of the astronomy community genuinely want to see new research facilities be built. If you don't build new things, the field gradually will atrophy. The senior review exercise is one that we believe in, so we're prepared to put up with its consequences -- as long as it means paring us back by 25 percent or so, and then allowing us to grow from there. If the recommendations go further than that -- that's not something that I would support as being beneficial to U.S. science. There is talk of future threats from near-Earth objects, such as asteroids. Why is Arecibo's radar vital for tracking these? Arecibo has the world's only high-power radar. And it's terrifically good at studying the terrestrial planets in the solar system, the satellites of Jupiter and Saturn, and, in particular, near-Earth asteroids. Many people are quite concerned by the threat that such asteroids pose. We can determine the motion of an asteroid to within about a millimeter per second. That's astonishing precision -- orders of magnitude better than you can do by any other technique. And if you have that information you can reconstruct the orbit of the asteroid, or you can project it into the future to determine whether the asteroid is likely to hit the Earth. Arecibo is the only place in the world where you can do that. The observatory is also engaged in sky surveys. What do scientists hope to learn from these? Take pulsars: We know about 1,000 pulsars, and of that 1,000, most rotate between 10 times a second and once a second. Pulsars are neutron stars with the mass of the sun but a diameter of about 10 km. They're the endpoint of the life of a star, formed when a supernova explodes. A few known pulsars -- less than 20 -- exist as members of a binary system. And some of those -- only five or six
[meteorite-list] Real Stardust From NASA Mission Lands at Washington University in St. Louis
http://record.wustl.edu/news/page/normal/8461.html 'Real' stardust from NASA mission lands on campus 'Real' stardust from NASA mission lands on campus By Susan Killenberg McGinn Record (Washington University in St. Louis) January 18, 2007 Stardust, the NASA spacecraft mission, was given that name in hopes that the seven-year journey to capture comet samples would bring back to Earth, well, stardust. In an article in a special issue of the journal Science, University researchers are the first to report that a sample they received from the mission actually does contain stardust - particles that are older than the sun. When the comet samples became available to analyze, one of the key scientific questions was to see whether this material also contained 'real stardust' particles, said Frank J. Stadermann, Ph.D., senior research scientist in physics in Arts Sciences and a co-author of the article. As it turned out, the one and only stardust particle in all of the analyzed comet samples was found right here in the St. Louis lab. The findings appear in the Dec. 15, 2006, article Isotopic Compositions of Cometary Matter Returned by Stardust. Stadermann, who is a sample adviser for the Stardust mission, also is a co-author on the six other reports about the mission's initial findings that appear in the special issue. Launched Feb. 7, 1999, the Stardust spacecraft sped through the tail of Comet Wild-2 at 15,000 mph Jan. 2, 2004. For 15 minutes, the spacecraft extended a honeycomb-like collector, capturing cometary dust grains in 132 ice-cube-sized cells made of aerogel, a silicon-based solid that is 99.8 percent air and resembles frozen pale-blue smoke. After the sample-return capsule's safe landing on the Utah salt flats Jan. 15, 2006, particles - each much smaller than a grain of sand - from several of the collector's cells were extracted, sliced up and disbursed to 50 labs around the world for analysis. Of those 50 labs, called pre-liminary examination groups, two are at the University. In late February, Stadermann received his team's first cometary material: three slices of one particle. Wasting no time, Stadermann and his WUSTL team - Ernst K. Zinner, Ph.D., research professor of physics and of earth and planetary sciences in Arts Sciences; Christine Floss, Ph.D., research associate professor of physics; and Kuljeet Kaur Marhas, Ph.D., postdoctoral research associate in physics - went right to work on it and, eventually, 10 other Stardust samples. The three researchers also are co-authors on the Science article. Kevin D. McKeegan, Ph.D., professor of geochemistry at UCLA, is first author on the article. McKeegan earned a doctorate in physics from WUSTL in 1987, with Zinner serving as his adviser. In addition to McKeegan, five other WUSTL alumni are either first or co-authors on some of the seven Science articles. Brigitte Wopenka, Ph.D., senior research scientist in earth and planetary sciences and a member of the McDonnell Center for the Space Sciences in Arts Sciences, is a co-author on two of the Science articles. As the other WUSTL researcher to receive Stardust samples to study, Wopenka is using a technique called Raman microprobe spectroscopy to characterize the inorganic composition and carbonaceous organic make-up of individual cometary dust grains. From the 'cosmic freezer' Using the University's state-of-the-art ion probe, the NanoSIMS (Secondary Ion Mass Spectrometer), Stadermann's team analyzed the particles' elemental and isotopic composition. The NanoSIMS, which Stadermann and Zinner helped design and test, can resolve objects as small as 50 nanometers - one thousand times smaller than the diameter of a human hair. The first NanoSIMS instrument in the world was purchased by WUSTL in 2000 for $2 million, with partial support from NASA, the National Science Foundation and the McDonnell Center for the Space Sciences. The measurements at WUSTL yielded a unique result providing a key component for our understanding of the composition and origin of comets, Stadermann said. When we made the discovery of the stardust grain in the comet sample, we were very excited, and we immediately knew that this little particle, although it is only 1/100,000 of an inch in diameter, would be one of the most important findings of the comet dust analysis, Stadermann said. This discovery proves that comets comprise dust grains from outside the solar system in addition to the many other components that were formed inside the solar system, he continued. The fact that these very different ingredients survived side-by-side in the comet shows how well the material was preserved in this 'cosmic freezer' for the past 4.5 billion years. NASA picked the name 'Stardust' for this mission many years ago, Stadermann noted. Only because of our measurement here at Washington University we now know that the comet really does contain true stardust. Scientists hope the Stardust findings will provide answers to
Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
Sounds like a great tourist destination, a big rock, alcoholics and drug addicts, crime, town in debt up to their ears, danger of electricity amd water being turned off, high unemployment, and a large military presence. Well pack my bags! Poorly thought out release by Mr. Kangueehi, maybe the spoof and phish people will move to Namibia for the new center of commerce. Dave F. Ron Baalke wrote: http://allafrica.com/stories/200701170803.html Namibia: So Much Potential But Not Enough Funds Kuvee Kangueehi January 17, 2007 The Deputy Mayor of Grootfontein, Paulus Hangula, has revealed that the residents of his town owe the Town Council over N$26 million in water and electricity debts. Speaking to New Era over the weekend, Hangula said the Town Council is fighting a losing battle trying to recover the money, as many of the residents are unemployed and struggling with accumulated debts. The deputy mayor said that, apart from the high unemployment rate which is the primary factor behind the debts, alcohol and drug abuse is also rife. He noted that there are very few employment opportunities at the town, and most of the employed residents are members of the Namibia Defence Force (NDF) and are stationed at the military base. Hangula said other residents employed are civil servants, people working at the local shops and farm workers employed on the surrounding farms. Since the mining operations at Kombat and Tsumeb were scaled down, this has affected the town's cash flow. He complained that most of the commercial farmers in the area invest little money in the town and spend their money instead at privately-owned businesses, resulting in the majority of the town's residents not benefiting from it. He noted, however, that everything is not all doom and gloom, as town has the great potential of becoming a big tourist attraction. Hangula said Grootfontein lies on the main roads, which connects Windhoek to the north-eastern part of Namibia including the Okavango and Caprivi regions. He stressed that, like Otavi and Tsumeb, Grootfontein is very green and during spring provides spectacular viewing. Grootfontein is really an ideal overnight stop if you are travelling to the Caprivi and Tsumkwe. Hangula pointed out that a special tourist attraction is the meteorite, which can be found on the farm Hoba, some 24 kilometres outside the town. One of the world's largest meteorites ever found, it is 3 metres long and one metre wide, weighs 50 tons, has a volume of 9 cubic metres, and hit the ground here some 8 years ago. The meteorite in Hoba consists of 82% iron, 16% nickel, 1% cobalt and various trace elements. With the passing of the years, the Hoba Meteorite has been somewhat reduced in size by visitors breaking off pieces to take home as souvenirs. The deputy mayor revealed that, despite the fact that many organizations educate people on HIV/Aids, the disease is still very rife at the town. He called on these organizations to intensify their campaigns and to apply different strategies in order to make them more effective. He said that although the rate of violent crimes is not very high at the town, vandalism is rife especially at schools, churches and other public places. Grootfontein has a population of approximately 1 people. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
Hi, Dave, List, Somebody's doing some good PR for Namibia. Take the name Namibia. If you look at the nice Wikipedia article on Namibia, the facts are all there: one of the lowest population densities in the world, one of the most rain-deprived countries in the world (like none), one of the least blessed by economic resources, a sad history, and so forth. But nowhere in the article will you find the name that Namibia went by for centuries: THE SKELETON COAST. Getting people to stop calling you The Skeleton Coast is a good job of PR. There's just something about the name The Skeleton Coast that puts people off, don't you think? Sterling K. Webb --- - Original Message - From: Dave Freeman mjwy [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED] Cc: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 1:53 PM Subject: Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite) Sounds like a great tourist destination, a big rock, alcoholics and drug addicts, crime, town in debt up to their ears, danger of electricity amd water being turned off, high unemployment, and a large military presence. Well pack my bags! Poorly thought out release by Mr. Kangueehi, maybe the spoof and phish people will move to Namibia for the new center of commerce. Dave F. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
--- Dave Freeman mjwy [EMAIL PROTECTED] wrote: Sounds like a great tourist destination, a big rock, alcoholics and drug addicts, crime, town in debt up to their ears, danger of electricity and water being turned off, high unemployment, and a large military presence. Funny thing is, apart from the crime, if a big rock fell on the Isle of Lewis, that's very similar to how I'd describe it here. Maybe I'm the man to go!! Rob McC Looking for earth-friendly autos? Browse Top Cars by Green Rating at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares for Jupiter Encounter
Jupiter's gravity will accelerate New Horizons away from the sun by an additional 9,000 miles per hour, pushing it past 52,000 mph and hurling it toward a pass through the Pluto system in July 2015. Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? You remember the conservation of energy stuff from school? GravPotential to Kinetic to GravPotential. A ball rolling down a hill can only roll up the other side to a height as high as it was released from. Why does this not apply to spacecraft? It's climbing out of the suns gravity well so it ought to be slowing down all the way. When you drop into Jupiters gravity well I can see that you're going to speed up but on the way out surely it'll lose all that speed and at the end of the encounter should be no faster than it went in at. In fact, slower because it's now further up the hill of the suns gravity well. Please, will someone tell me what I'm missing. It bothers me tremendously that I have a BSc in physics and studied both astronomy and astrophysics subsids and I don't get it. It's the same with asteroids getting ejected into orbits further out. How? How? Sir Isaac would not be amused Rob McC Looking for earth-friendly autos? Browse Top Cars by Green Rating at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares for
Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? Why does this not apply to spacecraft? It does apply. Gravity assists always involve 3 bodies, and the relative velocities to each other. In this case, the three bodies are the spacecraft, Jupiter and Sun. After New Horizons flies by Jupiter, there is no velocity change RELATIVE TO JUPITER. But the spacecraft does pick up extra velocity RELATIVE TO THE SUN. In return, Jupiter will slow down RELATIVE TO THE SUN. The velocity changes RELATIVE TO THE SUN are related to their respective masses. Since the spacecraft is so much smaller in mass than Jupiter, the velocity increase for the spacecraft is rather substantial. Jupiter's slowdown will be very miniscule because of its larger mass. Make sense now? Ron Baalke __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Gravitational slingshot
Hi Rob, Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? The trick is that you have to keep track of your reference frames. You are quite correct that the ~speed~ relative to Jupiter will be the same pre-encounter and post-encounter (though not the direction), but Jupiter is not stationary w.r.t. the sun, and as a consequence the velocity of the spacecraft relative to the sun can change quite a bit -- up to twice the orbital speed of Jupiter in this case. (Jupiter's orbital speed is 13 km/sec). --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] glorious QMIG update
Listoids Rightyho http://www.rawnet.com.au/~qwalkra1/index.htm Choice Tenham page up Sales page rearing to go Hammond Downs may be on the way Feelers are out to bring back the rest of the QUeenslanders Over to youse __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares forJupiter Encounter
Hi, Rob, I see Ron just posted the explanation to you and the List, but if you like colored line diagrams galore and equations with delta's in them, take a look at: http://en.wikipedia.org/wiki/Gravitational_slingshot Gotta love those little delta's. Sir Isaac would be de-lighted. The article also explains the powered slingshot when you do a engine burn at closest approach, which adds the energy of the burn to the energy provided by the planet, and to the energy the fuel picked up while falling in. It all goes to the spacecraft, because after you burn the fuel, it gets left behind. The powered slingshot is why the Earth is a hopeless candidate for spaceports of the future. You want to go somewhere else in the solar system? Depart from the Moon! It's got gentle escape velocity, no bothersome draggy atmosphere, then you drop like a rock in a circumterrestial orbit that skims the edge of that unhealthy Earth atmosphere. and do your big burn there. Hello, Mars, Venus, wherever you want to go! I'll be selling lunar condos in the lobby afterward, and LunaPort construction bonds, too... Sterling K. Webb - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 4:33 PM Subject: Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares forJupiter Encounter Jupiter's gravity will accelerate New Horizons away from the sun by an additional 9,000 miles per hour, pushing it past 52,000 mph and hurling it toward a pass through the Pluto system in July 2015. Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? You remember the conservation of energy stuff from school? GravPotential to Kinetic to GravPotential. A ball rolling down a hill can only roll up the other side to a height as high as it was released from. Why does this not apply to spacecraft? It's climbing out of the suns gravity well so it ought to be slowing down all the way. When you drop into Jupiters gravity well I can see that you're going to speed up but on the way out surely it'll lose all that speed and at the end of the encounter should be no faster than it went in at. In fact, slower because it's now further up the hill of the suns gravity well. Please, will someone tell me what I'm missing. It bothers me tremendously that I have a BSc in physics and studied both astronomy and astrophysics subsids and I don't get it. It's the same with asteroids getting ejected into orbits further out. How? How? Sir Isaac would not be amused Rob McC Looking for earth-friendly autos? Browse Top Cars by Green Rating at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
Just a little. Jerry Flaherty - Original Message - From: Sterling K. Webb [EMAIL PROTECTED] To: Meteorite List meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 4:28 PM Subject: Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite) Hi, Dave, List, Somebody's doing some good PR for Namibia. Take the name Namibia. If you look at the nice Wikipedia article on Namibia, the facts are all there: one of the lowest population densities in the world, one of the most rain-deprived countries in the world (like none), one of the least blessed by economic resources, a sad history, and so forth. But nowhere in the article will you find the name that Namibia went by for centuries: THE SKELETON COAST. Getting people to stop calling you The Skeleton Coast is a good job of PR. There's just something about the name The Skeleton Coast that puts people off, don't you think? Sterling K. Webb --- - Original Message - From: Dave Freeman mjwy [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED] Cc: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 1:53 PM Subject: Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite) Sounds like a great tourist destination, a big rock, alcoholics and drug addicts, crime, town in debt up to their ears, danger of electricity amd water being turned off, high unemployment, and a large military presence. Well pack my bags! Poorly thought out release by Mr. Kangueehi, maybe the spoof and phish people will move to Namibia for the new center of commerce. Dave F. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares for
Oh, great question and answer. Thanks Rob and Ron and Robert!! Jerry Flaherty - Original Message - From: Ron Baalke [EMAIL PROTECTED] To: Meteorite Mailing List meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 5:55 PM Subject: Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares for Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? Why does this not apply to spacecraft? It does apply. Gravity assists always involve 3 bodies, and the relative velocities to each other. In this case, the three bodies are the spacecraft, Jupiter and Sun. After New Horizons flies by Jupiter, there is no velocity change RELATIVE TO JUPITER. But the spacecraft does pick up extra velocity RELATIVE TO THE SUN. In return, Jupiter will slow down RELATIVE TO THE SUN. The velocity changes RELATIVE TO THE SUN are related to their respective masses. Since the spacecraft is so much smaller in mass than Jupiter, the velocity increase for the spacecraft is rather substantial. Jupiter's slowdown will be very miniscule because of its larger mass. Make sense now? Ron Baalke __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto PreparesforJupiter Encounter
Doh!! Jerry Flaherty - Original Message - From: Sterling K. Webb [EMAIL PROTECTED] To: Rob McCafferty [EMAIL PROTECTED]; Ron Baalke [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 6:46 PM Subject: Re: [meteorite-list] NASA Spacecraft En Route to Pluto PreparesforJupiter Encounter Hi, Rob, I see Ron just posted the explanation to you and the List, but if you like colored line diagrams galore and equations with delta's in them, take a look at: http://en.wikipedia.org/wiki/Gravitational_slingshot Gotta love those little delta's. Sir Isaac would be de-lighted. The article also explains the powered slingshot when you do a engine burn at closest approach, which adds the energy of the burn to the energy provided by the planet, and to the energy the fuel picked up while falling in. It all goes to the spacecraft, because after you burn the fuel, it gets left behind. The powered slingshot is why the Earth is a hopeless candidate for spaceports of the future. You want to go somewhere else in the solar system? Depart from the Moon! It's got gentle escape velocity, no bothersome draggy atmosphere, then you drop like a rock in a circumterrestial orbit that skims the edge of that unhealthy Earth atmosphere. and do your big burn there. Hello, Mars, Venus, wherever you want to go! I'll be selling lunar condos in the lobby afterward, and LunaPort construction bonds, too... Sterling K. Webb - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: Ron Baalke [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 4:33 PM Subject: Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares forJupiter Encounter Jupiter's gravity will accelerate New Horizons away from the sun by an additional 9,000 miles per hour, pushing it past 52,000 mph and hurling it toward a pass through the Pluto system in July 2015. Could someone clarify something which ahs been bothering me for years about this gravity assist technique? Why does the spacecraft come out of the gravity well going faster than it went in without thrust? You remember the conservation of energy stuff from school? GravPotential to Kinetic to GravPotential. A ball rolling down a hill can only roll up the other side to a height as high as it was released from. Why does this not apply to spacecraft? It's climbing out of the suns gravity well so it ought to be slowing down all the way. When you drop into Jupiters gravity well I can see that you're going to speed up but on the way out surely it'll lose all that speed and at the end of the encounter should be no faster than it went in at. In fact, slower because it's now further up the hill of the suns gravity well. Please, will someone tell me what I'm missing. It bothers me tremendously that I have a BSc in physics and studied both astronomy and astrophysics subsids and I don't get it. It's the same with asteroids getting ejected into orbits further out. How? How? Sir Isaac would not be amused Rob McC Looking for earth-friendly autos? Browse Top Cars by Green Rating at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Spacecraft En Route to Pluto Prepares for
Thanks Rob (from another Rob). Your explanation was very concise and clear. Especially having just read Ron's reply. As I told Ron, I'm going to have to spend some time daydreaming about it to get it comfortable in my head but I at least understand the physics now. There was me thinking it may have something to do with general relativity. I always doubted this because of the low masses and velocites involved. As for Isaac Newton, I still think he'd be grumpy about it all. His equations are only really much good in a 2 body situation. As I understand it, 3 bodies are a nightmare and ultimately unpredictable, though I don't know why, exactly. Once again, wonderful answers to my questions. I can go to bed now, content that I am a little smarter than when I woke up. Rob McC Don't pick lemons. See all the new 2007 cars at Yahoo! Autos. http://autos.yahoo.com/new_cars.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NZ reports falling, flaming object
Meteorite Déjà Vu? http://www.nzherald.co.nz/section/1/story.cfm?c_id=1objectid=10419869 Photos: Comet mistaken for plane in fiery plunge Friday January 19, 2007 By James Ihaka (photo by Dave Curtis) The McNaught Comet seen from Dunedin. The Fire Service and police around the country received calls last night from people mistaking Comet McNaught for an object falling from the sky. One person in Welcome Bay called and said they saw something falling from the sky and another near Waiuku said they thought a plane was on fire, said Fire Service communications centre spokeswoman Leah Denton. A police spokeswoman in Wellington confirmed they had also received calls from people who were wondering what was happening. The comet, which was named after Australian astronomer Robert McNaught who discovered it last year, is expected to be visible at twilight for the next three weeks. It is 124 million kilometres from Earth and is now moving away from the sun. Astronomers say it can be spotted in the southwestern sky shortly after sunset. Carter Observatory senior astronomer Brian Carter said the comet was the brightest in more than 40 years. Nasa astronomer Tony Phillips said the comet was 100 times brighter than Halley's Comet when it appeared in 1986. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Gottingen University Meteorite Collection
I have informations on italian meteorites present in this collection Matteo --- Mark Grossman [EMAIL PROTECTED] ha scritto: Perhaps someone can be of assistance. I am trying to find out some information about a meteorite sample that came from the Gottingen University collection in Germany. As far as I know, the meteorite curator is Mike Reich, and I have traded an e-mail with him, but then lost contact. Does anyone know Mike, or another contact for the Gottingen University meteorite collection, who might be able to provide me with information on some meteorite samples in their collection? Thanks in advance. Mark __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___ Vinci i biglietti per FIFA World Cup in Germania! yahoo.it/concorso_messenger __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Proud owner of World's Ugliest Halloween Meteorite
Greg's reference to the World's Ugliest Halloween Meteorites has prompted me to make my first post to the list. I am the proud owner of the World's Ugliest Halloween Meteorite lot from Greg. I would second's Greg's opinion that these things are mighty ugly. However, beauty is in the eye of the beholder. Here is some feedback from one person that I sold one of the specimens to: A+ a very nice example of highy weathered chondrite with caliche and fractures. The specimens from that lot have also wowed the kids I coach (although more traditional iron meteroites are a bigger hit). Thanks! From: [EMAIL PROTECTED] Date: 01/16/2007 11:57 To: Cc: Subj: Re: [meteorite-list] Northbranch H5 Hi Bernd and List, = Anyway, it is nice to hear someone say excellent, unbelievable, = proud and fine all in the same description with Northbranch. = Are there any *ugly* meteorites? There are ugly meteorites! In fact, last Halloween I offered and sold The World's Ugliest Halloween Meteorite. It went for an excellent price to a new proud owner. It was a fine mix of unbelievable Orange and Black colors and many broken fragments. It was truly ugly, but I am still proud to have discovered it with a batch of other chondrites. It is said the ugly is only skin deep, but I believe that one was ugly all the way through ;-) Best regards, Greg __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] ad) - Winona 1.98 gr.- Goalpara Ureilite - Hoba - Djoumine 17.98 gr........
Greetings, New listings starting at 1 penny: WINONA Winonite 1.98 gr fragment - The TYPE specimen for this for this rare class GOALPARA Olivine-Pigeonite Ureilite 0.488 gr fragment - found 1868 HOBA Ataxite 0.956 gr part slice - meteorite iron shale collected in 1929 from the 60 ton mass RICHFIELD LL 3.7, 3.76 gr thin part slice DJOUMINE 17.98 gr Fell Halloween 1999 DENSMORE 1879, 35 gram part slice Plus Cape York full sheet stamps (50) at $2.00 per stamp See them at http://cgi3.ebay.com/ws/eBayISAPI.dll?ViewUserPageuserid=meteoriteusa.com A good week to All, John Sinclair __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] The European Commission on Languages (Way Off Topic)
Laughing out loud!!! Thanks. Jerry Flaherty - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Tuesday, January 16, 2007 11:57 AM Subject: [meteorite-list] The European Commission on Languages (Way Off Topic) This is way off topic and has nothing to do with meteorites or astronomy, but with the international flavor of this list, perhaps a little chuckle would be in order. geozay - The European Commission on Languages has just announced an agreement whereby English will be the official language of the European Union rather than German, which was the other possibility. As part of the negotiations, the British Government conceded that English spelling had some room for improvement and has accepted a 5- year phase-in plan that would become known as Euro-English. In the first year, s will replace the soft c. Sertainly, this will make the sivil servants jump with joy. The hard cwill be dropped in favour of k. This should klear up konfusion, and keyboards kan have one less letter. There will be growing publik enthusiasm in the sekond year when the troublesome ph will be replaced with f. This will make words like fotograf 20% shorter. In the 3rd year, publik akseptanse of the new spelling kan be expekted to reach the stage where more komplikated changes are possible. Governments will enkourage the removal of double letters which have always ben a deterent to akurate speling. Also, al wil agre that the horibl mes of the silent e in the languag is disgrasful and it should go away. By the 4th yer people wil be reseptiv to steps such as replasing thwith z and wwith v. During ze fifz yer, ze unesesary o kan be dropd from vords kontaining ou and after ziz fifz yer, ve vil hav a reil sensi bl riten styl. Zer vil be no mor trubl or difikultis and evrivun vil find it ezi tu understand ech oza. Ze drem of a united urop vil finali kum tru. Und efter ze fifz yer, ve vil al be speking German like zey vunted in ze forst plas. If zis mad you smil, pleas pas other pepl. -- __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] COMET McNAUGHT IS STILL VISIBLE IN DAYLIGHT!
MexicoDoug and all. I can still see it with the naked eye! The sky is crystal blue today. It is just below and somewhat left of the the sun about 9 degrees or so. Venus can also be spotted to the east about 5 fist lengths away (40 to 50 degrees?) away from the sun. But it is hard to tell the distance in daylight. (I should have made a graduated cross-bow for daylight observations to ascertain the scale) The comet head is just about as bright as Venus maybe more. If one really looks at it you might just get a trace of the tail. As for the magnitude of Venus at this time (-2.x?) I will have to look it up on star charts to find out for this date. Also, for seeing Comet McNaught after the sun goes down here in AZ I don't think is possible as it sets before the sun and the tail points downward and toward the south. So it is a daylight object for us here in the US and the north. What is amazing about my observations over from the 15th to today, the 18th, is that it has moved so fast! I can actually trace its orbit around the sun over these days. It's great to live in Flagstaff with the clear sky (when it is not snowing as it did on the 12th to the 14th, the best days to have seen this daylight comet.) But I am extremely happy to have seen this event. I missed Ikeya Seki as it zipped around the sun, simply because no one told me how to look for it. My friends that actually saw it, saw it by accident when they were walking in the shade. The tail was 2 or more degrees long and tightly curved as Ikeya Seki zipped around the sun at 500,000 mph! Within the course of an hour or so it was out of sight during the day. It was an event in my life that I lamented to have missed every-time I thought on it. The Great Leonid display of 1966 too, having been washed out for that very night and that night alone with a thunderstorm. But seeing this comet in broad daylight, and moving in its orbit over the course of 4 days is very satisfying indeed. Steve Schoner IMCA #4470 -- MexicoDoug [EMAIL PROTECTED] wrote: This brings up a question to all. Did anyone down south of the equator see this [comet] in broad daylight from 01/12 to 01/16? All the reports I have thus far seen are from the north. It should have been easily seen in broad daylight down there as the sun would be higher in a blue sky. Hello Steve, Please correct me if I've not understood your statement but, this is not appreciably true. Lets say you have in 2 km elevation Flagstaff a view with the Sun at 33º high in the sky (only one third above the horizon=0º to the zenith=90º). And lets compare that to a location down south near the tropic of Capricorn (where the Sun is at a neckbreaking 88º altitude, basically at the zenith). Call that place Rio's Ipanema Beach, at sea level. Both locations have a similar loss of magnitude, just about 0.3. Actually Flagstaff is a little better off by a few percent. So in both places, the comet would appear to be -4.7 magnitude instead of the true e.g., -5.0, from sitting on top of the atmosphere like Hubble. The point is, with something this bright, the difference is much more sensitive to other things and you have minimal loss. Even if the comet were at the exact zenith and you were 2,000 meters above Rio, you would still lose 0.2 magnitudes - after all you can only do so well from the soup we live in and it is a light contaminated, polluted muck once you are outside the fishbowl looking in... The moral of this is that few people in Arizona (well, Phoenix probably realizes the way it was) and New Mexico know just how uniquely lucky they are. When we start to factor seeing, dust and humidity into the equation you guys are basically on the top of the world as you have an especially cooperative airmass on top of you. Plus, I suspect that the greater magnitude of the Sun in a zenith situation - takes its toll on contrast with our poor eyes as well making it at best a wash. Btw, plenty of folks saw it in the Southern Hemisphere during the day and twilight, though everyone had to put up with the same 5-7º angular separation from the Sun from our little Blue Spaceship Dot, the comet being 120 million kilometers away. The tail has improved somewhat apparently. (Thus - Arizona highlands was just about the finest place to be, all things considered). It apparently gave the Ozies quite a show in Perth last evening - like you northerners had. But the Northern hemisphere really got first dibs on this comet. Did you know if you were in Barrow, Alaska you could have watched the comet rise and set from about 9 am to 5 pm every day for the first two weeks of January - and even had to worry about the Sun, because it won't be rising there until say, January 23. Might be a wee bit nippy, but I think that the coinciding of a comet rising and setting instead of the Sun is the stuff of legends that turn men's bones into stones...And, we're meteorite hunters (I read Gallant's book, too and am a
Re: [meteorite-list] COMET McNAUGHT IS STILL VISIBLE IN DAYLIGHT!
Steve wrote: Also, for seeing Comet McNaught after the sun goes down here in AZ I don't think is possible as it sets before the sun and the tail points downward and toward the south. So it is a daylight object for us here in the US and the north. Hello again Steve, and thanks for the wonderful posts from someone as enthusiastic and luckily located for this incredible event for those that careful to observe it, which is of the type of once or twice in most lifetimes. Let me ditto all of your accolades to the show, though I have had a rather poor latitude and sky quality for such remarkable observations. I do differ on the first quoted statement you made which is of meteoroidic interest. I think this case we have is the case to watch, and gives us a unique experience to detect the exceptions to the general rule of the comet's tail always points away from the Sun. First, you need to consider you are looking at a projection when you observe - essentially a two dimensional figure, while the tail points away in the third dimension in a way very difficult to properly view. As you sure are aware, comets have two qualities of tails which can point in different directions. Near the nucleus and coma with the instantaneous production of dust material and charged particles, they converge in the same direction: the anti-solar direction as you mention. However, this comet has at least a 20 million km long tail and is very close to perihelion which was correspondingly near the ecliptic, as it continues to dip south while the tails are extended relatively parallel to the ecliptic (might say west if you were using Solar centered coordinates), though this of course is rapidly changing to south, too. The detail occurs in that while the ion trail is picked up by the Solar wind and follows this anti-solar orientation (from flat to directly below the plane of the Solar system which is the basic direction of travel of the comet, too, the brilliant dust trail in such an exciting case as this one has managed to pick up a great deal of curvature as things are happening so fast. Material that was sloughed off previous to crossing the Solar plane is in its own Unique stream, something like a meteoroid stream will diffuse along the whole orbit. Projections are pretty tricky, but remember the comet is 130 million km away or so, and just because it crosses the plane of Earth's orbit, does create an instant flip. Look at some of the beautiful pictures of the tail and you can see all the physics at work of both of our comments. The bottom line is that the tails can easily delay a little to reorient, as the great curvature in this case demonstrates, and we need to view this from a neutral detached point, not from an overly geo-centric perspective which would be misleading. Maybe this can help clear up my thinking? Note the tails' orientations: http://spaceguard.esa.int/NScience/neo/neo-what/com-tail.htm Anyhow that is what I think, right or wrong, plus there also were unverified observations this phenomenon, and you are in Flagstaff, where I wish I could be to check this out. But this is a transient effect and will quickly be lost if it hasn't been already. Just, specifically, the reason you suggested it is not possible, is the reason that makes it so interesting and exciting to look for after Sunset. My two centavos and a wish for best health, Doug - Original Message - From: Steve Schoner To: [EMAIL PROTECTED] ; meteorite-list@meteoritecentral.com Sent: Thursday, January 18, 2007 3:20 PM Subject: Re: [meteorite-list] COMET McNAUGHT IS STILL VISIBLE IN DAYLIGHT! MexicoDoug and all. I can still see it with the naked eye! The sky is crystal blue today. It is just below and somewhat left of the the sun about 9 degrees or so. Venus can also be spotted to the east about 5 fist lengths away (40 to 50 degrees?) away from the sun. But it is hard to tell the distance in daylight. (I should have made a graduated cross-bow for daylight observations to ascertain the scale) The comet head is just about as bright as Venus maybe more. If one really looks at it you might just get a trace of the tail. As for the magnitude of Venus at this time (-2.x?) I will have to look it up on star charts to find out for this date. Also, for seeing Comet McNaught after the sun goes down here in AZ I don't think is possible as it sets before the sun and the tail points downward and toward the south. So it is a daylight object for us here in the US and the north. What is amazing about my observations over from the 15th to today, the 18th, is that it has moved so fast! I can actually trace its orbit around the sun over these days. It's great to live in Flagstaff with the clear sky (when it is not snowing as it did on the 12th to the 14th, the best days to have seen this daylight comet.) But I am extremely happy to have seen this event. I
[meteorite-list] AD - NWA 998 and NWA 482 Thin Sections
Hello all Well, we have all enjoyed looking at Tom's photos of the thin sections so I decided to put them up on ebay. Sorry but due to the cost of having them made to stringent quality standards, I had to make the auctions BUY IT NOW NWA 482 Thin Section: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=200070371740 NWA 998 Thin Section: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=200070363960 A list of all my current auctions can be found at the following link: http://www.meteorite.com/meteorites/ebay/catch_a_falling_star_meteorites.htm Thanks for looking ! Jim Strope 421 Fourth Street Glen Dale, WV 26038 http://www.catchafallingstar.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AML Price List
So how much of The Nininger Collection went to The Huss Collection, AML, and how much of that went to the Max-Planc Institute? Bill -Original Message- From: [EMAIL PROTECTED] Sent: Wed, 17 Jan 2007 22:28:30 -0800 To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: Re: [meteorite-list] AML Price List Some one cover this already? I read that the majority of the Nininger Collection was sold for $275,000, far below the listed value. You can read more about it in the book Find A Falling Star. Good Night, Moni From: Matt Morgan [EMAIL PROTECTED] To: MexicoDoug [EMAIL PROTECTED] CC: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] AML Price List Date: Wed, 17 Jan 2007 20:29:59 -0700 No ideawho has the number? Matt Good health, Doug PS, Matt, 1965? for how much did H.H. sell his collection to Arizona in 1960? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list _ Turn searches into helpful donations. Make your search count. http://click4thecause.live.com/search/charity/default.aspx?source=hmemtagline_donationFORM=WLMTAG __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite)
Sounds similar to the first met-list take on Park Forest, if you replace the word military with police, lol. Bill -Original Message- From: [EMAIL PROTECTED] Sent: Thu, 18 Jan 2007 12:53:43 -0700 To: [EMAIL PROTECTED] Subject: Re: [meteorite-list] Namibia: So Much Potential But Not Enough Funds (Hoba Meteorite) Sounds like a great tourist destination, a big rock, alcoholics and drug addicts, crime, town in debt up to their ears, danger of electricity amd water being turned off, high unemployment, and a large military presence. Well pack my bags! Poorly thought out release by Mr. Kangueehi, maybe the spoof and phish people will move to Namibia for the new center of commerce. Dave F. Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list KEEP SPYWARE OFF YOUR COMPUTER - Protect your computer with Spyware Terminator! Visit http://www.spywareterminator.com/install and find out more! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] QMIG update
Listoids South Australian Museum holds previously unknown Queensland Meteorite OPAL CORNER More details and hopefully a picture tomorrow www.rawnet.com.au/~qwalkra1/ Hooroo __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] worlds ugliest meteorwrong
Listoids We have been reminded about the worlds ugliest meteorite but I swear I have the worlds ugliest meteorwrong will post picture on my meteorwrong page if there is any interest Ciao __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
