[meteorite-list] AD: individual Gibeon, big Chelyabinsk, Millbillillie, Thin Sections, Kaba, HunPol2000 microscopes in Ebay
Ending soon in Weekend my few auctions in Ebay. See them here: http://www.ebay.com/usr/cbo891 Nice regmaglypted, Gibeon individual iron meteorite 673.7 gr 1250USD http://tinyurl.com/zbkrz43 Big Chelyabinsk LL5 meteorite, frothy Fusion Crusted 123.79 gr 990USD http://tinyurl.com/zss4ryr Famous Millbillillie eucrite, partially black FC 14.67 gr 390USD http://tinyurl.com/zqxsh84 Kaba historic CV3 from 1857, Hungary (no in Market!!!) 250-800USD http://tinyurl.com/h744j2g Thin Sections: NWA 8263 L3.5 super nice chondrite 89USD Allende CV3 nice Thin Sections 69-89USD NWA 6953 mesosiderite, awsome colored 39USD Xiuyan impactite, from China, rare! 49USD NWA xxx chondrite, 24USD and lot of (over 110 pcs polished Thin Section off EBay). Interest in PM. Rizalites from Philippines, Paracale District 40-170USD Moldavites, Agoudal irons, NWA xxx chondrites HunPol2000 portable polarizing microscope for meteorites Thin Sections 170 USD http://tinyurl.com/zkcmmta HunPol2000 portable polarizing/reflected microscope 2in1 model 280 USD http://tinyurl.com/hngryxh Flight marked NWA chondrite, stunning, 629 gr 499USD http://tinyurl.com/jh9at98 Please contact me in email for off Ebay. Best Regards! Zsolt Kereszty Hungary IMCA#6251, MetSoc __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Unclassified Contributed by: Aziz Habibi http://www.tucsonmeteorites.com/mpodmain.asp?DD=01/14/2016 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] No, Asteroid Aphophis STILL Won't Hit Us in 2036
http://www.slate.com/blogs/bad_astronomy/2016/01/04/asteroid_apophis_will_not_hit_earth_in_2036.html No, the Asteroid Apophis STILL Won't Hit Us in 2036 By Phil Plait January 4, 2016 We are safe from an Apophilypse. Wait, what? People are still fearmongering about Apophis? Seriously? OK, let's start this off with the conclusion: Like the title says, the asteroid Apophis is not going to hit us in 2036. In fact, the cumulative chance it will hit us in the next century is less than 1 in 100,000. In other words, we're safe. So, what's going on? This latest doom crying nonsense to abuse astronomy comes to us from Sputnik News. It got picked up at various other places, including Christian Today and that bastion of peer-reviewed science, Facebook. The article is interesting; it has some things in it that are true, some that are kinda half-true, and others that are just outright misleading. For example, it says, Apophis will approach Earth at a distance of 37,000-38,000 kilometers on April 13, 2029. This is true. Apophis was discovered in 2004, and after a few observations it was determined that it would make a very close approach to Earth in 2029, even closer to us than orbiting geosynchronous satellites! Still, the chance of an impact was small, and as more observations were made it became clear it would definitely miss us on that date. However, shortly thereafter things got sticky. It was discovered that while it would miss us in 2029, it will pass so close to Earth that our planet's gravity would strongly affect the asteroid's orbit. The closer it got to us, the more its path would be warped. And if it passed at just the right distance, its trajectory would be changed by just the right amount to bring it back to Earth in 2036 - and possibly impact us. Yeah, that's a problem. Apophis is about 325 meters across, and so massive that were it to hit, it would release the energy equivalent to more than 1 billion tons of TNT exploding, at least 20 times more than the largest nuke ever detonated! So that is something we'd rather not see happen. But would it? The exact path of the 2029 pass is critical for the 2036 collision. In the earlier encounter, the asteroid would have to pass through a very narrow volume of space near the Earth called a "keyhole"; if it got too close to Earth, then its orbit would change so much it would miss in 2036, and if it didn't get close enough then again, the change in its orbit would guarantee a miss. But if it got it just right, drilled right through the keyhole, then seven years later: bang. The question then became, will it miss the keyhole, or are we in serious trouble? The more observations of an asteroid we make, the better we can determine its orbit. As more astronomers watched Apophis, the chance of an impact dwindled; over time it became clear it was unlikely to pass through the keyhole in 2029, so a 2036 impact was unlikely as well. Then, in 2013, we got great news: Radar observations, which are extremely accurate, ruled out a keyhole shot in 2029. That means that in 2036, Apophis will miss us by more than 20 million kilometers (50 times the distance of the Moon). We're completely safe. So why then is Sputnik News reporting we might get it in 2036? The article is confused at best, saying the asteroid may hit us, and also saying it won't. The headline reads, "Russian Astronomers Predict Apophis-Earth Collision in 2036," but then the very first line is Russian astronomers have predicted that asteroid Apophis may strike Earth on April 13, 2036 [emphasis mine]. What is it? "May" or the implied "will" in the headline? Sigh. The Christian Today article is even worse. The headline there is, "Giant Asteroid Could Hit and Destroy Earth on April 13, 2036, Russian, U.S. Scientists Warn". Um, no. Even though an Apophis impact would be really bad, it would be far smaller than, say, the one that wiped out the dinosaurs, and note that the Earth is still here. But then, amazingly, the article gets even worse than that. They quote American asteroid astronomer Don Yeomans: "There is a chance in 2036 [that Apophis will hit Earth]," Donald Yeomans, head of NASA's Near-Earth Object Program Office, recently told LiveScience.com. That struck me as odd; I know Don and I'm pretty sure he wouldn't say that. I emailed him, and he replied: 99942 Apophis has no chance of hitting Earth in 2036 and that has been the case since at least early 2014. I think I've been misquoted - if indeed I talked to these folks at all. I could not have talked to them recently since I've been semi retired since January of 2015 and have not been the Manager of NASA's Near-Earth Object Program Office since then. Heh. So maybe he said something like this back before 2013, when there was still a very small chance of a 2036 impact, but a quick Web search by the article author would reveal it's no longer the case. So that article stretches the word
[meteorite-list] MRO HiRISE Images: January 13, 2016
MARS RECONNAISSANCE ORBITER HIRISE IMAGES January 13, 2016 o Erosion and Deposition in Schaeberle Crater http://hirise.lpl.arizona.edu/ESP_042527_1555 This image shows a window into the history of the crater's fill deposit, showcasing eroding bedrock and aeolian landforms. o Ancient Rivers http://hirise.lpl.arizona.edu/ESP_042924_2195 Early in Martian history, liquid water energetically carved the surface, forming channel systems that look remarkably similar to river valleys and drainage networks on Earth. o Mars 2020 Candidate Landing Site in McLaughlin Crater http://hirise.lpl.arizona.edu/ESP_043136_2020 McLaughlin Crater straddles three major terrain types: the Northern lowlands, the Southern highlands and the Mawrth Vallis region. o A Young, Fresh Crater in Hellespontus http://hirise.lpl.arizona.edu/ESP_043398_1600 At 1.3 kilometers in diameter, this unnamed crater is only slightly larger than Arizona's Meteor Crater. All of the HiRISE images are archived here: http://hirise.lpl.arizona.edu/ Information about the Mars Reconnaissance Orbiter is online at http://www.nasa.gov/mro. The mission is managed by NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, for the NASA Science Mission Directorate, Washington, D.C. Lockheed Martin Space Systems, of Denver, is the prime contractor and built the spacecraft. HiRISE is operated by the University of Arizona. Ball Aerospace and Technologies Corp., of Boulder, Colo., built the HiRISE instrument. __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Philae Lander Fails to Respond to Last-Ditch Efforts to Wake It
https://www.newscientist.com/article/dn28752-philae-lander-fails-to-respond-to-last-ditch-efforts-to-wake-it/ Philae lander fails to respond to last-ditch efforts to wake it New Scientist By Jacob Aron 11 January 2016 Farewell, Philae. The space lander that touched down on comet 67P/Churyumov-Gerasimenko (and in our hearts) in November 2014 has not responded to a last-ditch attempt to wake it, and it now looks almost certain that the lander is permanently sleeping. Comet 67P is moving away from the sun, and in just a few weeks will become too cold and dim for the lander to survive. It has not been heard from since July 2015. Last night, mission managers at the German Aerospace Center in Cologne sent a signal to Philae commanding it to spin its internal flywheel, a risky and unpredictable manoeuvre that could dislodge it from its shady landing spot in the hope of getting more sunlight on its solar panels. It didn't work. "We did not hear anything," says lander manager Stephan Ulamec. In the best-case scenario, Philae may have received the command and moved, but be unable to respond due to a damaged transmitter. It is more likely that the signal was not received. In mourning The team will try a few more commands, but it looks like Philae has officially gone. "We have to face reality, and chances get less and less every day as we are getting farther and farther away from the sun," says Ulamec. 'At some point we have to accept we will not get signals from Philae anymore." Philae's orbiting companion Rosetta has scanned the landing zone with its camera. Ulamec's team will scour the images for any sign of a dust cloud thrown up by the lander moving, but Rosetta is far away from the comet and Philae is too small to be seen directly. Besides mourning the loss of the most famous space probe of recent times, the team is also disappointed that Philae may have more data about 67P stored in its memory that will now be lost. 'It's certainly a bit sad that we could not retrieve more data after the wake-up in June," says Ulamec. 'We have to live with the data that we got in November 2014." There remains one small hope. As Rosetta comes to the end of its mission in September this year, mission managers are planning to bring it down into a very low orbit of the comet, eventually touching down on the surface itself. Rosetta should be able to capture close-ups of Philae's final resting spot, giving us one last look at the probe. "You should clearly see the lander, and this will help us interpret the data we received in November," says Ulamec. __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] 3 Billion-Year-Old Fossils Show Early Microbes Lived in Cavities
https://www.newscientist.com/article/dn28678-3-billion-year-old-fossils-show-early-microbes-lived-in-cavities/ 3 billion-year-old fossils show early microbes lived in cavities New Scientist December 16, 2015 It seems the microbes that formed Earth's first ecosystems looked for shade when the sun was strong, just like we do. Fossils found in South Africa suggest that cavities in tidal sediments might have provided refuge from deadly solar rays during the Archaean aeon when we think that life emerged on Earth. At this time, between 4 billion and 2.5 billion years ago, Earth was scorched by intense UV radiation, and had no ozone layer to protect it - a bit like Mars is today. So life at the surface would have found survival a challenge. Some of the oldest fossil cells are around 3.43 billion years old, and thought to have lived on sand grains that might have been covered by shallow water and overlying grains. At the Barberton greenstone belt in South Africa, an area where ancient volcanic rock has been pushed to the surface, there are thin layers of rock thought to be 3.22 billion-year-old microbial mats - sheets of microbes that covered tidal areas of the seashore. Now fossilised bacteria have been discovered underneath the mat in cavities covered by a thin layer of sediment. The bacteria are rod-shaped, growing end-to-end in long filaments like many bacteria do today. Like modern microbes "The shape is quite uniform," says co-author Alessandro Airo, whose colleague Martin Homann at the Free University of Berlin, Germany, analysed the fossils. "It appears that by that time, they were already able to biochemically control diameter and length, and coordinate themselves into a chain. That's what modern microbes do all the time." David Wacey, a palaeobiologist at the University of Bristol, UK, says the evidence from the new study looks robust. 'They have studied the geology in detail so we know that the environment was habitable for life, and the interpreted setting is closely comparable to where we would expect to find such structures today," he says. "The record of Archaean microfossils is sparse and controversial," says Birger Rasmussen at Curtin University, Australia, who previously reported the discovery of cavity-dwelling microbes in 2.7 billion-year-old sediments in Australia. "This is an exciting find as it extends the record of possible life in this habitat a further 500 million years." The atmosphere and UV radiation during this period of Earth's history are thought to have been similar to conditions on Mars. Airo says that understanding how life could have survived in this time could give us clues about what sort of life might be found on Mars and where to look. "This study shows that very close to the surface, life was possible back then," he says, "so it could well be that microbes thrived even on the surface of Mars and not necessarily only in deep water or the subsurface." Journal reference: Geology, DOI: 10.1130/G37272.1 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Ad - Canyon Diablo Collector Set, Baby Gibeon Irons, NWA Pallasites, Silver Moldavite Pendant, Ochansk, Pony Creek, Toluca, More!
Hi Friends and Collectors, I have many new offerings, including several new micromount localities, small NWA pallasite individuals, small Gibeon irons, a silver and moldavite pendant, and more. Use coupon code "metlist" at checkout for 20% off your entire order. :) New Meteorites & Tektites : Canyon Diablo Collector Set (Magnet, Brochure, Card, Meteorite) - http://www.galactic-stone.com/product/canyon-diablo-collector-set-meteor-crater-magnet-brochure-card-meteorite "Baby" Gibeons (iron meteorite, Namibia) - http://www.galactic-stone.com/product/gibeon-namibia-iron-meteorite-found-by-aborigines-small-individual Large Indochinite Biscuits and Splashforms - http://www.galactic-stone.com/product/indochinite-tektite-very-large-biscuit-and-splash-forms Meteorwrong Lot (group of stony chondrite-imposters) - http://www.galactic-stone.com/product/meteorwrong-lot-stony-saharan-chondrite-imposters-394g NWA 7045 (pallasite, uncut individual, 1.81g) - http://www.galactic-stone.com/product/nwa-7045-saharan-pallasite-uncut-whole-stone-181 NWA 7045 (pallasite, uncut individual, 1.6g) - http://www.galactic-stone.com/product/nwa-7045-saharan-pallasite-uncut-whole-stone-16g NWA 7045 (pallasite, partial oriented shield with lip, 1.36g) - http://www.galactic-stone.com/product/nwa-7045-saharan-pallasite-uncut-whole-stone-136o NWA 7045 (pallasite, small endcuts) - http://www.galactic-stone.com/product/nwa-7045-saharan-pallasite-endcut Toluca (iron meteorite, Mexico, shale and metal thumbail) - http://www.galactic-stone.com/product/toluca-classic-mexican-iron-meteorite-oxide-thumbs Silver Moldavite Pendant (11+ carats) - http://www.galactic-stone.com/product/moldavite-pendant-sterling-silver-meteorite-impact-glass-115cts New Micromount Localities : Jepara (pallasite, olivine crystals) - http://www.galactic-stone.com/product/jepara-strange-indonesian-pallasite-meteorite-olivine-micromount Millbillillie (eucrite, 1960 Australia fall) - http://www.galactic-stone.com/product/millbillillie-1960-australia-witnessed-fall-eucrite-micromount NWA 7045 (pallasite) - http://www.galactic-stone.com/product/nwa-7045-saharan-pallasite-2011-find-micromount NWA 8687 (lunar troctolite) - http://www.galactic-stone.com/product/nwa-8687-lunar-troctolite-meteorite-micro Ochansk (H4, 1887 Russia Fall) - http://www.galactic-stone.com/product/ochansk-1887-russian-witnessed-fall-h4-meteorite-micromount Pony Creek (H4, 1947 Texas find) - http://www.galactic-stone.com/product/pony-creek-1947-runnels-county-texas-h4-meteorite-micromount Toluca (iron meteorite, Mexico, micromount) - http://www.galactic-stone.com/product/toluca-classic-mexican-iron-meteorite-micro Impactites : Wanapitei Crater (impact breccia endcut, 49g) - http://www.galactic-stone.com/product/wanapitei-impact-crater-suevite-49 Serpent Mound Crater (impact breccia endcut, 92g) - http://www.galactic-stone.com/product/serpent-mound-crater-big-impact-breccia-endcut-92g Sudbury Crater (impact ore, micromount) - http://www.galactic-stone.com/product/sudbury-crater-mine-ore-rich-in-rare-metals-iridium All new specimens - http://www.galactic-stone.com/products/brand-new?pagesize=48 Thanks for looking and happy huntings! MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/galacticstone Pinterest - http://pinterest.com/galacticstone - __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
