[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Kernouve Contributed by: Anne Black http://www.tucsonmeteorites.com/mpodmain.asp?DD=05/04/2016 __ 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
Re: [meteorite-list] New Meteorite Auction Site
List, Seems like a great website. Thanks. Carl -- Love & Life drtanuki via Meteorite-list wrote: > Anne, Ruben and List, Ironic that Anne Black mentions Jason Utas being ripped off. That SOB still owes me nearly $20,000 USD from over 3 years ago. Anyone dealing with Jason UTAS be aware that he is a thief! I have a written contract signed by him as proof. Karma, Jason UTAS! Jason UTASs days in the meteorite world and professional meteoritics are in doubt. Dirk Ross...Tokyo The Latest Worldwide Meteor/Meteorite News http://lunarmeteoritehunters.blogspot.com/ From: Anne Black via Meteorite-list To: rubengarcia85...@gmail.com; howardi...@hotmail.com Cc: meteorite-list@meteoritecentral.com Sent: Tuesday, May 3, 2016 4:21 AM Subject: Re: [meteorite-list] AD: New Meteorite Auction Site I have to agree fully with Ruben. I no longer buy or sell on Ebay, too many scams (just ask Jason Utas!), too many fakes. If I see something there I would like, being presented by a seller I do know, I will contact the seller directly. So, I am sorry, but no I won't use an auction service whether it is meteorite-oriented or not. Good luck. (BTW: the convertion option on your site does not work. I asked it to convert GBP1480 into US$, the answer was: GBP1480 = US$1480. I don't think so.) Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Ruben Garcia via Meteorite-list To: David Butland Cc: meteorite-list Sent: Mon, May 2, 2016 7:53 am Subject: Re: [meteorite-list] AD: New Meteorite Auction Site Hi, Speaking just for myself I can say the following. This is a great idea and I applaud you for your hard work. However, 99.9 % of the people on this forum know each other and know meteorites - we don't buy or sell fake meteorites. In other words you're preaching to the choir. You need to tell this to the millions out there buying off ebay (who are the unknown buyers) and that will be hard to do. What I mean is this, ebay does have it's share of issues but as someone who has been selling on ebay since 1998 I can tell you it's worth it - It is at least for me. I preface every ad I place on ebay with a short bio about myself (a little annoying? maybe, but it works) and I sell a lot of meteorites. I would love to support your endeavor as I said it seems like a good idea, but ebay reaches so many more people than your site. Even if all 1000 members of this forum signed up for your selling site it would be mush easier to reach them by just placing an ad to this forum just like you did. Anyway, good luck I hope you can somehow reach the masses as that's what it would take for me to join. On Fri, Apr 29, 2016 at 1:10 PM, David Butland via Meteorite-list wrote: https://www.howardites.com/auctions/ Good day to you all (meteorite enthusiasts, collectors, sellers & buyers). We (Howardites) have developed a meteorite orientated auction site specifically for buying and selling meteorite orientated items ONLY. We totally understand the frustrations that arise when using other sites similar to Howardites Auctions. What we offer: No more fakes! that's right no more meteor wrongs, we do not want to go down the same path as our competitors and we want to pride ourselves in providing a first class service and a safe haven for buyers and sellers. Site Security: Our site is secure and we use SSL Buying / buyers? We allow members of the public to register for free and buy with no fees incurred. Selling / sellers? We only allow sellers who can provide a proven track record in selling meteorite orientated items to sell on our site, this service is completely free. Sellers are never charged listing fees and or final value fees. This is truly free!! Howardites Auctions has numerous built in payment gateways so the seller can receive funds problem free, at ease and securely and the buyer can send payments promptly and securely. You are never stuck with just one payment gateway see below for examples: PayPal RBS Worldpay 2CO Nochex iKobo SagePay Authorize.Net Moneybookers Paymate Express payment Google Checkout Amazon payments Alertpay Gunpal As you can see the list is big! If you wish to accept your own payment method? You are free to do so, we will not punish you for doing so. If you want to be paid with a crate of bananas then so be it 😊 Shipping Carriers: We also have 3 integrated shipping carriers, they are: USPS FedEx UPS Howardites Auctions is easy to use and has many features, check us out now by clicking the link above. Please support us by signing up now, we promise you wont regret it! Unsure about something? Have a question? Send us a message, we would love to hear from you, our email: howardi...@hotmail.com __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list
[meteorite-list] Dawn Journal - April 29, 2016
http://dawnblog.jpl.nasa.gov/2016/04/29/dawn-journal-april-29-2/ Dawn Journal by Dr. Marc Rayman April 29, 2016 Dear Glutdawnous Readers, The distant dwarf planet that Dawn is circling is full of mystery and yet growing ever more familiar. Ceres, which only last year was hardly more than a fuzzy blob against the stars, is now a richly detailed world, and our portrait grows more elaborate every day. Having greatly surpassed all of its original objectives, the reliable explorer is gathering still more data from its unique vantage point. Everyone who hungers for new knowledge about the cosmos or for bold adventures far from Earth can share in the sumptuous feast Dawn has been serving. One of the major objectives of the mission was to photograph 80 percent of Ceres' vast landscape with a resolution of 660 feet (200 meters) per pixel. That would provide 150 times the clarity of the powerful Hubble Space Telescope. Dawn has now photographed 99.8 percent with a resolution of 120 feet (35 meters) per pixel. This image of Haulani Crater uses color pictures Dawn acquired during its third mapping orbit at an altitude of 915 miles (1,470 kilometers). We saw the crater from the same altitude in black and white here. This false color picture highlights differences in composition or other properties that your eye would not be able to detect. In this color scheme, blue is associated with geologically young material, consistent with the description of the black and white image as showing a young crater. It is easy to see that the surrounding region was affected by the formation of the crater. (The last picture below shows the area around another crater that was altered by an impact.) Also note the variation in terrain within the crater, including a prominent ridge in the center. The crater is 21 miles (34 kilometers) in diameter. Full image and caption. Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA This example of Dawn's extraordinary productivity may appear to be the limit of what it could achieve. After all, the spaceship is orbiting at an altitude of only 240 miles (385 kilometers), closer to the ground than the International Space Station is to Earth, and it will never go lower for more pictures. But it is already doing more. Since April 11, instead of photographing the scenery directly beneath it, Dawn has been aiming its camera to the left and forward as it orbits and Ceres rotates. By May 25, it will have mapped most of the globe from that angle. Then it will start all over once more, looking instead to the right and forward from May 27 through July 10. The different perspectives on the terrain make stereo views, which scientists can combine to bring out the full three dimensionality of the alien world. Dawn already accomplished this in its third mapping orbit from four times its current altitude, but now that it is seeing the sights from so much lower, the new topographical map will be even more accurate. [Image] Dawn captured this view of Oxo Crater on Jan. 16 from an altitude of 240 miles (385 kilometers). Although it is a modest six miles (10 kilometers) across, it is a particularly interesting crater. This is the only location (so far) on Ceres where Dawn has clearly detected water. Oxo is the second brightest area on Ceres. Only Occator Crater is brighter. Oxo also displays a uniquely large "slump" in its rim, where a mass of material has dropped below the surface. Full image and caption. Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA Dawn is also earning extra credit on its assignment to measure the energy of gamma rays and neutrons. We have discussed before how the gamma ray and neutron detector (GRaND) can reveal the atomic composition down to about a yard (meter) underground, and last month we saw initial findings about the distribution of hydrogen. However, Ceres' nuclear glow is very faint. Scientists already have three times as much GRaND data from this low altitude as they had required, and both spectrometers in the instrument will continue to collect data. In effect, Dawn is achieving a longer exposure, making its nuclear picture of Ceres brighter and sharper. In December we explained how using the radio signal to track the probe's movements allows scientists to chart the gravity field and thereby learn about the interior of Ceres, revealing regions of higher and lower density. Once again, Dawn performed even better than expected and achieved the mission's planned accuracy in the third mapping orbit. Because the strength of the dwarf planet's gravitational tug depends on the distance, even finer measurements of how it varies from location to location are possible in this final orbit. Thanks to the continued smooth operation of the mission, scientists now have a gravitational map fully twice as accurate as they had anticipated. With additional measurements, they may be able to squeeze out a little more detail, perhaps improv
[meteorite-list] MRO HiRISE Images: May 4, 2016
MARS RECONNAISSANCE ORBITER HIRISE IMAGES May 4, 2016 o Troughs in Elysium Fossae http://hirise.lpl.arizona.edu/ESP_044884_2050 The two linear depressions in this image form part of the Elysium Fossae complex, a group of troughs located in the Elysium quadrangle of Mars. o Possible Sulfate Deposits in West Melas Chasma http://hirise.lpl.arizona.edu/ESP_044892_1695 In this region, hydrated sulfate salts have been detected, and are found extensively throughout the Valles Marineris canyon system. o Southern Winter Frost Accumulations http://hirise.lpl.arizona.edu/ESP_044909_1450 With this image taken during mid-winter in the Southern hemisphere, we can observe accumulating frost on pole-facing slopes. o A One-Kilometer Crater on the Floor of Saheki Crater http://hirise.lpl.arizona.edu/ESP_044913_1580 Much of the material has been eroded over time and has slumped downwards towards the crater floor, leaving behind chalk-like streaks of color. 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] Found: Clues about Volcanoes Under Ice on Ancient Mars
http://www.jpl.nasa.gov/news/news.php?feature=6472 Found: Clues about Volcanoes Under Ice on Ancient Mars Jet Propulsion Laboratory May 3, 2016 Volcanoes erupted beneath an ice sheet on Mars billions of years ago, far from any ice sheet on the Red Planet today, new evidence from NASA's Mars Reconnaissance Orbiter suggests. The research about these volcanoes helps show there was extensive ice on ancient Mars. It also adds information about an environment combining heat and moisture, which could have provided favorable conditions for microbial life. Sheridan Ackiss of Purdue University, West Lafayette, Indiana, and collaborators used the orbiter's mineral-mapping spectrometer to investigate surface composition in an oddly textured region of southern Mars called "Sisyphi Montes." The region is studded with flat-topped mountains. Other researchers previously noted these domes' similarity in shape to volcanoes on Earth that erupted underneath ice. "Rocks tell stories. Studying the rocks can show how the volcano formed or how it was changed over time," Ackiss said. "I wanted to learn what story the rocks on these volcanoes were telling." When a volcano begins erupting beneath a sheet of ice on Earth, the rapidly generated steam typically leads to explosions that punch through the ice and propel ash high into the sky. For example, the 2010 eruption of ice-covered Eyjafjallajökull in Iceland lofted ash that disrupted air travel across Europe for about a week. Characteristic minerals resulting from such subglacial volcanism on Earth include zeolites, sulfates and clays. Those are just what the new research has detected at some flat-topped mountains in the Sisyphi Montes region examined with the spacecraft's Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), providing resolution of about 60 feet (18 meters) per pixel. "We wouldn't have been able to do this without the high resolution of CRISM," Ackiss said. The Sisyphi Montes region extends from about 55 degrees to 75 degrees south latitude. Some of the sites that have shapes and compositions consistent with volcanic eruptions beneath an ice sheet are about 1,000 miles (about 1,600 kilometers) from the current south polar ice cap of Mars. The cap now has a diameter of about 220 miles (about 350 kilometers). The Mars Reconnaissance Orbiter Project has been using CRISM and five other instruments on the spacecraft to investigate Mars since 2006. The project is managed by NASA's Jet Propulsion Laboratory, Pasadena, California, for the agency's Science Mission Directorate, Washington. The Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, provided and operates CRISM. Lockheed Martin Space Systems in Denver built the orbiter and supports its operations. NASA has three active orbiters and two rovers at Mars that are advancing knowledge about the Red Planet that is useful in planning future missions that will take humans there. News Media Contact Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. 818-354-6278 guy.w.webs...@jpl.nasa.gov Dwayne Brown / Laurie Cantillo NASA Headquarters, Washington 202-358-1726 / 202-358-1077 dwayne.c.br...@nasa.gov / laura.l.canti...@nasa.gov Elizabeth Gardner Purdue University, West Lafayette, Ind. 765-494-2081 ekgard...@purdue.edu Geoffrey Brown Johns Hopkins University Applied Physics Laboratory, Laurel, Md. 240-228-5618 geoffrey.br...@jhuapl.edu 2016-120 __ 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] Impacts Might Have Made Ancient Mars Briefly Hospitable to Life
https://eos.org/articles/impacts-might-have-made-ancient-mars-briefly-hospitable-to-life Impacts Might Have Made Ancient Mars Briefly Hospitable to Life A bombardment of the Red Planet 4 billion years ago could have created hot springs that allowed life to flourish. Comets or asteroids striking the Martian surface long ago might have unleashed intense heat that lingered in the bottoms of impact craters and supported microbial life. This relatively recent impact crater photographed last year spans a little more than a kilometer in the Sirenum Fossae region of Mars. Credit: NASA/JPL/University of Arizona By Shannon Hall EOS - Earth & Space Science News 28 April 2016 Hydrothermal springs like those in Yellowstone National Park - pools of blue steaming water with concentric rings of green, yellow, orange, and red mats of thriving bacteria - might have once dotted Mars' young surface. New research suggests that when comets and asteroids bombarded the Red Planet roughly 4 billion years ago, the heat from the largest impacts transformed the craters they forged into hydrothermal springs, which are well known for being microbial oases. Microbial life could have inhabited these hot spots for the geologically brief interval - a few million years - during which the springs would have existed, proposed Oleg Abramov from the U.S. Geological Survey in Flagstaff, Ariz., and Stephen Mojzsis from the University of Colorado, Boulder. For ancient microbes, hydrothermal springs would have provided a cornucopia of nutrients. Those in Yellowstone, for example, typically dine on sulfur and release a gas, which gives the park its aroma of rotten eggs. "I like to draw the analogy to a buffet bar in Vegas," says Mojzsis. "[Hot springs give] lots of food and it's practically for free." He and Abramov will publish their findings in the 15 May issue of Earth and Planetary Science Letters. The paper was posted on the journal's website in March. Creating Hydrothermal Springs from Impacts Scientists dub the period during which these Martian hydrothermal springs would have formed the Late Heavy Bombardment. At the time, swarms of comets and asteroids pelted the inner moons and planets of the developing solar system. A few of the targets - like Mercury, the Moon, and Mars - have abundant battle wounds still visible today. On Mars, "some of [these impacts] were large enough - hundreds of kilometers across - to make a thousand-kilometer-diameter basin and drape the entire surface of Mars in a hundred meters or so of molten rock," says Mojzsis. "It's like pouring very hot molten chocolate on top of your vanilla ice cream. It melts after a short time." Any impact large enough to melt the rock would have also melted huge amounts of the ice that lay frozen in the Martian crust, allowing water to flow into newly formed craters. Indeed, evidence of ancient river valleys and lake sediments on Mars often coincides with the oldest crater surfaces, says Mojzsis. The hot rock below those newly formed rivers or lakes would have then heated the water enough to create a hot spring - lasting as long as the rock remained hot. Analogues on Earth? Steam rises from the hydrothermal Grand Prismatic Spring in Yellowstone National Park, Wyoming. Credit: Paul Racko, CC BY-NC-ND 2.0 Two massive impact craters on Earth provide definitive proof that crater bottoms can cradle hydrothermal springs. Both the Sudbury crater in Canada and the Vredefort crater in South Africa show signs of hydrothermal alteration, in which the hot water chemically changed the nature of the rock - a signature that remains visible long after the water has disappeared. To boot, the Haughton crater in the Arctic shows evidence of not only hydrothermal alteration but also the fossilized microbial communities that once lived there. Although the craters on Mars show similar hydrothermal alteration (but no microbial communities have been found...yet), scientists can't be sure if that alteration resulted from impacts or previous volcanism. Mojzsis thinks the best evidence comes from the ages of the crater bottoms. Samples measured in situ by the Curiosity rover currently roaming around one of the largest impact craters show that the rock dates from the onset of the Late Heavy Bombardment. Only an impact large enough to melt the surface and create a hydrothermal hot zone could have erased prebombardment age signatures that otherwise would have been left in the rock by decay of radiometric isotopes, Mojzsis explained. Further evidence could come from the Curiosity rover or perhaps the Mars 2020 mission, if its team chooses a site within another massive impact crater. Cooking Up a Thick Atmosphere To explore the effects of the bombardment on ancient Mars, Abramov and Mojzsis used a supercomputer cluster to model every impact that struck the Red Planet's surface throughout that time. Although scientists can't know exact de
[meteorite-list] Orientated Meteorites
Hi all, A couple months ago several people contacted me wanting to purchase My book, ASPECTS OF METEORITE ORIENTATION. I found I had only a couple left and checked the print-on-demand website where it had been published and found they no longer provide Print-on-demand service. I therefore had it republished and it can now be had directly (in Paperback, at: https://www.createspace.com/6225298 I also had it published in Kindle format (you can get the free Kindle App for any device, including your phone at https://www.google.com/#q=free+kindle+apps ) And can purchase the book in Kindle form at: https://goo.gl/VfX6qZ For those unfamiliar with the book it includes the following: Orientation Defined, Effect of Orientation on Value, Degrees of Orientation, TYPES: Domed, Shields, Nosecones, Teardrops & Bullets, Flowlines, Lipping, Backside Pooling & Bubbling, Regmaglypting, Unique Shapes, Flight Markings vs. Oriented - multiple photos of specimens in each category. (Thanks to all that provided photos) 106 pg Thanks, Michael __ 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 - Updated website.
Hello everybody, I finally got it done! Most of my website has been thoroughly updated, and I hope it will be easier to navigate, I have some many pieces there!!! Go ahead, try it and tell me what you think: http://www.impactika.com/ Anne M. Black www.IMPACTIKA.com impact...@aol.com __ 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
