[meteorite-list] Bright Meteor Fireball Texas 9SEP2010 12:17am MDT
Dear List, A bright shadowcaster was seen by Jim Gamble at El Paso Allsky Station in El Paso, TX an hour go or so. For more info: http://lunarmeteoritehunters.blogspot.com/2010/09/texas-meteormeteorite-news-el-paso-tx.html El Paso Allsky original post: photo and video pending http://www.elpasoallsky.blogspot.com/ http://www.elpallskycamera.us/ Best Regards, Dirk Ross...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] Witnessed fall lunar's?
Sterling, Rob, List, OMG. You make finding a Lunar far more exciting and important than any mere financial reward could possibly be. Now that we know everything we always wanted to know. I think recognition is the next most important part of the formula. We have all seen many a video where the hunters dismiss potential finds based on odds and not necessarily Science. By now we all know for instance that many Lunar's and Martians do not stick to a magnet. What makes it even worse is that almost all Lunar's also have a twin sister made here on earth. They may have brown, Black and even tan crusts or none at all. Many have no visible metal at all. And as Randy puts it, are unremarkable. I have been AZ. hunting for many years and have corresponded with Randy more than a Gazillion times. It seems he agrees that most Lunar's do have a twin Earthling. So, it often takes more than a mere visual observation to determine Lunar origin. In fact he has told me that it takes chemical analysis and mineral rations as well as a few other tricks to be sure. So, I have here a link to a few of my odd ( out of place) finds that I think resemble either Lunar's or Martians of various types. I have no idea if they are rights or wrongs. just that they look a lot like the real enchilada. http://tinypic.com/yourstuff.php I hope everyone will look at them and share there opinion. Please look. Luckily , living in Tucson has availed me the opportunity to see and hold most of the rare material brought to the show. Much by some of the European dealers that don't sell on eBay so, the only place to see and hold this material is the Tucson show itself. By the way, This is a good reason for folks to come to Tucson. It is something you think about for months after. It is all I think about for Months afterwards. Click on pictures to enlarge. Thanks. Carl -- Carl or Debbie Esparza Meteoritemax Sterling K. Webb sterling_k_w...@sbcglobal.net wrote: Hi, Lunar Gang, and List, We have a situation here that needs straightening out. Escaping from the Moon is one thing. Getting to the Earth is another. Here's how it starts. An object is propelled off the lunar surface (doesn't matter how). As soon as it's no longer in contact with the force that impelled it, its speed can't increase. It can decrease, though, and it does. Lunar gravity will pull down on it, reducing its speed at the same rate it would gain if it fell. It goes slower and slower. Eventually, its speed will fall to zero and it will reverse course and start to fall back. UNLESS its starting velocity is above or at the Moon's escape velocity. It takes 2380 meters/sec to escape to the point 38,000 miles from the Moon's center to where the gravitation pull of the Earth and the Moon are equal. If the rock started with 2381 m/sec, it will get there moving at 1 m/sec, a crawl. After that, the important thing is: which way was it headed? Surrounding the Moon is a distorted spherical (parabolic) envelope with its pocket pointing directly at Earth that outlines that balancing point between the Earth's and the Moon's pull. It's called the Hill Sphere (for any body). The Hill Sphere, or equipotential point for the Moon, is at a radius of about 38,000 miles, still over 200,000 miles from earth. If a Lunar escapee has enough speed to reach the Moon's Hill Sphere and cross over, it will be under the control of the Earth's gravitational field. The Moon has only 1/81.3 of the mass of the Earth, so the balance point between them is much closer to the Moon than the Earth. Oh, if it was going very fast, it could escape the Earth too, but the odds against that are great. No, that rock is dam lucky to have made it to the Translunar Gravitational Equipotential Point for its flight. In general, since Lunar escape velocity is low compared to the Earth's, if a rock just barely escapes, by the time it crosses the Border, it would be moving very slowly, almost standing still. From the viewpoint of the Earth, it's like someone carried a rock 'way out there and while standing still far from Earth, dropped it. Like so many borders, once you cross it, you're in another jurisdiction. The Moon no longer has any say in what happens to the rock that crosses the Hill Sphere Border. Slowly at first, it begins to fall toward Earth, but it moves faster and faster, eventually acquiring (up to) 11,233 meters/sec, plus any starting speed, blah, blah... Will it curve and swerve and head straight for the Earth's central spot? No, not often. There are a variety of outcomes and few of them will get a rock to land on Earth. Many will end up co-orbiting the Sun along with the Earth and will eventually tangle with the Big Mother Planet again. Some, that are headed more or less toward the Earth to begin with will scream past in an asymptotic pass, whipping around the Earth, changing direction and picking up speed,
Re: [meteorite-list] Missouri Round Rocks are tektites?
Jason, Before I sent that link, I spent several hours using the amazing internet and found quite a bit of info. Enough to convince me this stuff is not what it's represented to be. Hard to believe isn't it? The only point of my post was to point out another ridiculous ebay sale that's been pretty successful selling concretions as tektites. I was hoping the community might address the issue or at least alert those that might not be aware of the fact that these rocks are probably not tektites. Best Wishes, Bill Date: Wed, 8 Sep 2010 20:23:36 -0700 Subject: Re: [meteorite-list] Missouri Round Rocks are tektites? From: meteorite...@gmail.com To: parkforest...@hotmail.com; meteorite-list@meteoritecentral.com Hello Bill, All, Google-ing Osceola round rocks turned up the following: http://en.wikipedia.org/wiki/Weaubleau-Osceola_structure Excerpt: Round rocks of Osceola Long thought to be a glacial remnant, these conglomerate rocks are found in the area of Osceola. They are nearly perfectly round, and are referred to locally simply as round rocks or Missouri rock balls. Current theory suggests that these rocks are chert concretions, created when the impact threw pieces of shale away from the center of the crater, and later silica-rich materials formed around the shale seeds. The following reference mentioned the round rocks, but gave no explanation for their formation: http://courses.missouristate.edu/KevinEvans/RI-75(2003AMGguidebook).pdf The next reference noted 'angular' chert clasts with siltstone interiors, but made no mention of the rounded cobbles: http://www.lpi.usra.edu/meetings/largeimpacts2003/pdf/4111.pdf The amount of information you can find in only a few minutes with a simple search...that internet's an amazing thing. Best, Jason On Tue, Sep 7, 2010 at 4:10 PM, bill kies wrote: http://cgi.ebay.com/FOSSIL-MATRIX-TEKTITE-ANCIENT-MO-METEORITE-CRATER-/140449841609? __ 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] Asteroids Are Back In Vogue
http://www.spaceflightnow.com/news/n1009/06asteroid/ Asteroids are back in vogue SPACEFLIGHT NOW September 5, 2010 Responding to President Obama's call for a manned asteroid mission by 2025, brainstorming scientists and engineers say NASA could start exploring nearby space rocks with robotic probes in four years, followed by a bare-bones human expedition by the end of the decade. The target dates require a quick agreement on a space exploration strategy between Congress and the White House, notwithstanding ever-present budget and technical challenges. Asteroid exploration would meet key scientific, economic and national security objectives, according to the plan's proponents. It would also serve as a waypoint to Mars, NASA's ultimate destination. Human visits to nearby asteroids could collect hundreds of pounds of samples, shedding light on the formation of the solar system, valuable minerals that could be harvested for commercial pursuits, and the threat of these objects to civilization on Earth. Congress continues to debate the White House plan, which also cancels NASA's program to return humans to the moon and turns over crew transportation to low Earth orbit to commercial operators. When legislators return to Washington Sept. 13, there will be less than three weeks until fiscal year 2011 begins, meaning NASA will likely be forced to get by on a continuing budget resolution for at least some time. The continuing resolution would freeze next year's funding at or near fiscal year 2010 levels, putting any asteroid exploration dreams on the backburner. Despite the climate of uncertainty, an engineering team from Lockheed Martin Corp. is proposing using two Orion capsules to stage a roundtrip mission to an asteroid as soon as 2016. The Orion spacecraft is the centerpiece of the Constellation program, which would be scrapped under the Obama administration's proposed 2011 NASA budget. President Obama announced his intention in April to salvage the Orion capsule for use as an International Space Station lifeboat. The president set the 2025 goal for humanity's first trip to an asteroid during the same speech at the Kennedy Space Center in Florida. Presented in a white paper this summer, the Plymouth Rock mission would send two or three astronauts to accessible small asteroids with orbits closely shadowing Earth's. The Plymouth Rock concept identifies eight near-Earth asteroids for a quick five-day visit by astronauts. A dual-Orion configuration probably represents the minimum capability necessary to perform an asteroid mission, a Lockheed Martin team led by Josh Hopkins wrote in the white paper. The Lockheed Martin proposal says the most feasible opportunity to explore an asteroid before President Obama's deadline would be in 2019 and 2020, when an object named 2008 EA9 passes within reach of rockets launched from Earth. Crude estimates of the asteroid's size indicate it is less than 40 feet in diameter. Other launch opportunies from 2016 until 2030 have drawbacks or occur after President Obama's 2025 goal. The Plymouth Rock paper charts a mission scenario using two launches from Earth. Under the mission concept, an unpiloted Orion spaceship and high-energy Earth departure rocket stage would blast off on a heavy-lift booster like the Ares 5 rocket. The crew would launch on a smaller Ares 1 or Delta 4-Heavy rocket, dock their capsule to the waiting Orion spacecraft in orbit, then fire the Earth departure stage into deep space. Once at the asteroid, the astronauts would conduct spacewalks to collect samples and possibly leave behind permanent experiments. After a five-day visit, the crew would jettison one of the Orion capsules and return to Earth. The Plymouth Rock mission could be accomplished in 200 days or less in the 2019 launch opportunity. That duration is within the Orion's design life and comparable to the length of current space station expeditions, reducing the need for major spacecraft modifications and placing the asteroid journey within NASA's experience base. The crew's exposure to radiation and constrained living volume inside the Orion vehicles would be limiting factors for longer voyages using the Plymouth Rock architecture, according to the white paper. The initial step in an asteroid exploration program would be to send robotic spacecraft to sample, survey and study the objects, some of which would be favorable destinations for human voyages. A scout mission is crucial because scientists don't have much experience with asteroids. The earliest robotic missions to scout potential asteroid destinations could be ready to launch by 2014. Scientists at the Johns Hopkins University Applied Physics Laboratory have a plan for an unmanned spacecraft to depart for an asteroid around the same time. There have only been two missions that have ever operated near an asteroid and stayed there a long time, said Andrew Cheng, the chief scientist of the Applied Physics Laboratory's
Re: [meteorite-list] Asteroids Are Back In Vogue
Asteroids are back in vogue ?? http://img205.imageshack.us/img205/6861/asteroidsinvogue.jpg ?? __ 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] September Issue of Meteorite-Times Now Up
Hello Everyone, The September issue of Meteorite-Times is now up. http://www.meteorite-times.com/meteorite_frame.htm Enjoy! Paul and Jim __ 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] Test - Please delete
Thank you, Jaime __ 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] RFSPOD---nwa2737
metal nano particle formation in the olivine? Would love to see that at greater magnification A pallasite within a chassignite? on a separate note,I would have thought all listees were aware that there is a time delay between posting a message to the list and it showing up.Seems to be an awful lot of duplicates recently Sláinte __ 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 Greeks May Have Spotted Halley's Comet
http://www.newscientist.com/article/mg20727774.400-ancient-greeks-spotted-halleys-comet.html Ancient Greeks spotted Halley's comet By Jo Marchant New Scientist 09 September 2010 A CELESTIAL event in the 5th century BC could be the earliest documented sighting of Halley's comet - and it marked a turning point in the history of astronomy. According to ancient authors, from Aristotle onwards, a meteorite the size of a wagonload crashed into northern Greece sometime between 466 and 468 BC. The impact shocked the local population and the rock became a tourist attraction for 500 years. The accounts describe a comet in the sky when the meteorite fell. This has received little attention, but the timing corresponds to an expected pass of Halley's comet, which is visible from Earth every 75 years or so. Philosopher Daniel Graham and astronomer Eric Hintz of Brigham Young University in Provo, Utah, modelled the path that Halley's comet would have taken, and compared this with ancient descriptions of the comet (Journal of Cosmology, vol 9, p 3030). For example, the comet was said to be visible for 75 days, accompanied by winds and shooting stars, and in the western sky when the meteorite fell. The researchers show that Halley's comet would have been visible for a maximum of 82 days between 4 June and 25 August 466 BC. From 18 July onwards, a time of year characterised in this region by strong winds, it was in the western sky. At around this time, the Earth was moving under the comet's tail, so its debris field would have made shooting stars. None of this proves the comet's identity, but Graham says such major comet sightings are rare, so Halley must be a strong contender. Previously, the earliest known sighting of Halley was made by Chinese astronomers in 240 BC. If Graham and Hintz are correct, the Greeks saw it three orbits and more than two centuries earlier. The researchers' analysis reveals this moment to be a crucial turning point in the history of astronomy. Plutarch wrote in the 1st century AD that a young astronomer called Anaxagoras predicted the meteorite's fall to Earth, which has puzzled historians because such events are essentially random occurrences. After studying what was said about Anaxagoras, Graham concludes that he should be recognised as the star of early Greek astronomy. Rather than predicting a particular meteorite, he reckons Anaxagoras made a general statement that rocks might fall from the sky. At this time, says Graham, everyone thought that celestial bodies such as the moon and planets were fiery, lighter-than-air objects. But after observing a solar eclipse in 478 BC, Anaxagoras concluded that they were heavy, rocky lumps, held aloft by a centrifugal force. This implied that solar eclipses occurred when the moon blocked the light from the sun. It also meant that if knocked from position, such a rock might crash to Earth. When the meteorite fell, no one could deny it, says Graham. The headline was 'Anaxagoras was right'. Did Halley's comet play a role? It is always possible that the comet might have nudged a near-Earth asteroid from its course and sent it hurtling towards northern Greece. From that point on, the idea of rocks in the sky was accepted, and the Greeks had a new understanding of the cosmos. Issue 2777 of New Scientist magazine __ 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] Mooresfort Meteorite
If anyone has received this already, my apologies. I am having trouble sending as well as receiving messages. With the reports of a possible fall of a meteorite in Co. Tipperary, Ireland, it's interesting to note that the Mooresfort meteorite fell in Co. Tipperary in August 1810, slightly over 200 years ago. A paper of mine involving the history of the Mooresfort meteorite and how it led to one of the greatest battles in the history of chemistry - the battle over who developed the atomic theory - John Dalton or William Higgins - is scheduled for publication in Notes Records of the Royal Society in December 2010. You can view the abstract of the article, which is entitled William Higgins at the Dublin Society, 1810-1820: the loss of a professorship and a claim to the atomic theory at the FirstCite section of the journal: http://rsnr.royalsocietypublishing.org/content/firstcite The article is listed in the middle of the page under the date July 28. Just click on the abstract link. Notes Records of the Royal Society should be available at most college and museum libraries. The article will be freely available at the Notes Records website one year after publication. It's a very interesting story about the Mooresfort meteorite which I think many of the list subscribers might enjoy. Mark Grossman Author of Smithson Tennant: meteorites and the final trip to France, Notes Records of the Royal Society 2007 61, 265-283. http://rsnr.royalsocietypublishing.org/content/61/3.toc Mark Grossman 28 Cypress Lane Briarcliff Manor, NY 10510 USA __ 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] Orgueil - article on supernova shrapnel
Just saw this. Hope it hasn't already been shared with the list. If so, sorry for the duplicate effort. http://www.networkworld.com/community/node/66068 __ 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] Venusian meteorites
Where the Venusian meteorites? Chris Spratt Victoria, BC (Via my iPhone) __ 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] Orgueil - article on supernova shrapnel
Hello Michael and Listers, Thank you for the link about the Orgueil meteorite, might I add this meteoriten is one of the best meteorites out there not for only its rich wealth of scientific data, but also the history and hoax behind the Orgueil meteorite. Here is also a link I found about the top 10 ten meteorites, http://science.discovery.com/top-ten/2009/meteors/meteors-07.html I have to agree with some of the meteorites listed but, I think they have left out some other great meteorites, but again, there are more meteorites with rich historical history not listed that I deem would be great for the list but there is only room for 10. Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_nkw=_armrs=1_from=_ipg=_trksid=p4340 [meteorite-list] Orgueil - article on supernova shrapnelMichael Murray mikebevmurray at gmail.com Thu Sep 9 20:53:29 EDT 2010 Previous message: [meteorite-list] Mooresfort Meteorite Next message: [meteorite-list] test Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Just saw this. Hope it hasn't already been shared with the list. If so, sorry for the duplicate effort. http://www.networkworld.com/community/node/66068 Previous message: [meteorite-list] Mooresfort Meteorite Next message: [meteorite-list] test Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Meteorite-list mailing 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] Tunkuska Tektites?
Posted this (Below) earlier but if it went out to Others, it did not make it back to me Has anyone heard of the claims related to tektites Associated with the the Tunguska event? See these offerings on eBay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=180558454201ssPageName=A DME:B:SS:US:1123 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=180558453506ssPageName=A DME:B:SS:US:1123 Anyone know who lives in Clearwater, FLA? Michael __ 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] Planetary Body Odors
Hello List, Would like to hear from any of you that have a fragmental impact breccia in your collection, and think that it is giving-off an odor. ( Here is a list of some Impact Melt Breccia (IMB): http://www.mars.li/impact%20melt%20meteorites.htm ) Also, would the first person that finds a fresh Lunar fall, please check to see if it has an odor like burnt gunpowder? If you read my latest Meteorite-Times article you would understand why I am making these strange requests. My article (with more information) is here: http://meteorite-recovery.tripod.com/2010/sep10.htm even your closest satellites won’t tell you.” :+( Bob V. __ 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
