[meteorite-list] Just listed 100's of Meteorites on ebay
Hi all, I just listed 100's of meteorites on ebay. Some cool ones too! Take a look http://www.ebay.com/sch/mr-meteorite/m.html?item=67048628&cp=1&sojTags=bu%3Dbu&autorefresh=true&euid=69cc0d7e88214555824167eac13a52c8&bu=43196474320&rt=nc&_trksid=p2047675.l2562 -- Rock On! Ruben Garcia http://www.MrMeteorite.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
[meteorite-list] Dawn Journal - September 27, 2016
http://dawn.jpl.nasa.gov/mission/journal_09_27_16.html
Dawn Journal
Dr. Marc Rayman
September 27, 2016
Dear Dawnniversaries,
Nine years ago today, Dawn set sail on an epic journey of discovery and
adventure. The intrepid explorer has sailed the cosmic seas and collected
treasures that far exceeded anything anticipated or even hoped for. It
began its voyage at Earth with a fiery ascent atop a Delta rocket. After
escaping from its home planet's gravitational grasp, it flew through
the solar system perched on a pillar of blue-green xenon ions that enabled
the probe to accomplish a mission that would have been impossible with
conventional propulsion. In 2009, with its sights set on more distant
lands, Dawn swept past Mars, taking some of the planet's orbital
energy for its own. By its fourth anniversary, Dawn was conducting an
extensive orbital investigation of protoplanet Vesta, the second most
massive resident of the main asteroid belt. Dawn found it to be quite
unlike typical asteroids. Rather than a big chunk of rock, Vesta is like
a small planet, and scientists recognize it as being more closely related
to the rocky planets of the inner solar system (including Earth) than
to the much smaller asteroids. Vesta's nearer brethren are the blue
and white planet where Dawn began its mission nine years ago and the red
one it flew by 17 months later. By its fifth anniversary of leaving Earth,
the interplanetary spaceship was on its way to yet another distant, alien
world. Under the careful guidance of its human colleagues, Dawn completed
its 2.5-year journey from Vesta to Ceres last year. Now a perpetual companion
of the first dwarf discovered, the veteran space traveler will spend all
future anniversaries in orbit around Ceres, even after its operational
lifetime has concluded.
By February of this year, the spacecraft had exceeded all of its original
objectives established by NASA. Doing so involved orbiting Vesta for 14
months and, at that time, Ceres for almost a year. On June 30, Dawn's
prime mission concluded, and on July 1, its "extended mission" began.
[Dawn LAMO Image 147]
This simulated view of Ahuna Mons, Ceres' highest mountain, was made
with bonus stereo pictures Dawn acquired from an altitude of 240 miles
(385 kilometers). Ahuna Mons is likely a cryovolcano ("cold volcano"),
formed by cryomagma composed of salty mud rising from underground. The
volcano is geologically young, probably between 50 and 240 million years.
(We discussed in May how ages are estimated, but the analysis for Ahuna
Mons cannot yet pin down the age more accurately.) As Ceres is nearly
4.6 billion years old, a structure that developed so recently suggests
that some of the conditions that were necessary may persist even today.
(So far, scientists have identified no other cryovolcanoes on Ceres.)
It took somewhere between a few hundred and few hundred thousand years
for the volcano to build up to its present size. The elevation of the
summit is about 13,000 feet (4,000 meters), and the mountain is 11 miles
(17 kilometers) across at the base. Note the streaks from rockfalls down
the steep slopes (about 35 degrees). This view is from the north, and
in the foreground is a crater coincidentally 11 miles (17 kilometers)
across. From the lowest point in this crater to the top of the volcano
is 24,800 feet (7,560 meters) vertically across a horizontal distance
of only nine miles (15 kilometers). With 2.7 percent of Earth's gravity,
this could be a very nice extraterrestrial hike.
Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA
One year ago today, the ship was in its third Ceres mapping orbit, scrutinizing
the exotic landscapes 915 miles (1,470 kilometers) beneath it. Less than
four weeks later, it started powering its way down through the uncharted
depths of Ceres gravitational field to undertake the final planned observations
of its long mission.
When ion thrusting concluded on Dec. 13, 2015, Dawn was orbiting closer
to Ceres than the International Space Station is to Earth. From its vantage
point only 240 miles (385 kilometers) high, the probe used its suite of
sophisticated sensors to develop a richly detailed portrait of the only
dwarf planet in the inner solar system. Dawn's reason for venturing
to its fourth mapping orbit was to collect about 35 days of neutron spectra,
35 days of gamma-ray spectra and 20 days of gravity measurements. Given
the complexity of operating in the low, tight orbit, mission planners
expected it could take about three months to acquire these precious data
and transmit them to Earth. Operations turned out to be essentially flawless,
and by the time Dawn left that orbit on Sept. 2, it had accumulated 183
days of neutron spectra, 183 days of gamma-ray spectra and 165 days of
gravity measurements. In addition, the spacecraft amassed a sensational
bonus of 38,000 high resolution photos (including stereo and color) as
well as more than 11 mill
[meteorite-list] Mars Rover Opportunity Update: September 20-26, 2016
http://mars.nasa.gov/mer/mission/status.html#opportunity OPPORTUNITY UPDATE: Busy Week of Science and Imaging for Opportunity - sols 4500 - 4506, September 20, 2016-September 26, 2016: Since leaving the "Lewis and Clark Gap" of Marathon Valley, Opportunity has been driving through "Bitterroot valley" toward her first waypoint of the new extended mission, "Spirit Mound." With the Sol 4500 (Sept. 20, 2016) drive, she arrived at the base of the mound. The rover then bumped to a parking position for imaging and access to possible surface targets on Sol 4502 (Sept. 22, 2016). Finally, on Sol 4505 (Sept. 25, 2016), Opportunity bumped to "Gasconade," a thin, bright and linear outcrop, another possible surface target. The Sol 4500 uplink had to be shortened to avoid an X-band fault due to a very late X-band pass and Earth set below the highly tilted rover deck. A Quick Fine Attitude (QFA) was also done on Sol 4500. Panoramic Camera (Pancam) images of Spirit Mound and a Navigation Camera (Navcam) panorama were done on Sol 4501 (Sept. 21, 2016), with dust devil monitoring the following morning. On Sol 4502 (Sept. 22, 2016) Pancam images of nearby boulders were taken before the drive and a post-drive Pancam mosaic of Spirit Mound was taken afterwards. Opportunity took more color Pancam images of Spirit Mound, performed a Pancam low sun survey, and took Microscopic Imager (MI) sky flats on Sol 4503 (Sept. 23, 2016), with a Pancam horizon survey the following morning. On Sol 4504 (Sept. 24, 2016), Opportunity took a 13-filter Pancam image of "Council Bluffs", a section of the ridge south of Gasconade, and Gasconade itself, followed by a Pancam 4x1 context panorama of the ridgeline including Council Bluffs. On Sol 4506 (Sept. 26, 2016), Opportunity collected a Navcam image of her tracks, took a Pancam image of "Portland," a breccia target, and a Pancam mosaic of the top of Spirit Mound above Gasconade. As of Sol 4506 (Sept. 26, 2016), the solar array energy production is 474 watt-hours with an elevated atmospheric opacity (Tau) of 0.892 and a solar array dust factor of 0.701. Total odometry as of Sol 4505 (Sept. 25, 2016) is 26.99 miles (43.44 kilometers). __ 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] Curiosity Rover Finds Evidence of Mars Crust Contributing to Atmosphere
http://www.jpl.nasa.gov/news/news.php?feature=6631 Curiosity Finds Evidence of Mars Crust Contributing to Atmosphere Jet Propulsion Laboratory September 29, 2016 NASA's Curiosity rover has found evidence that chemistry in the surface material on Mars contributed dynamically to the makeup of its atmosphere over time. It's another clue that the history of the Red Planet's atmosphere is more complex and interesting than a simple legacy of loss. The findings come from the rover's Sample Analysis at Mars, or SAM, instrument suite, which studied the gases xenon and krypton in Mars' atmosphere. The two gases can be used as tracers to help scientists investigate the evolution and erosion of the Martian atmosphere. A lot of information about xenon and krypton in Mars' atmosphere came from analyses of Martian meteorites and measurements made by the Viking mission. "What we found is that earlier studies of xenon and krypton only told part of the story," said Pamela Conrad, lead author of the report and SAM's deputy principal investigator at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "SAM is now giving us the first complete in situ benchmark against which to compare meteorite measurements." Of particular interest to scientists are the ratios of certain isotopes - or chemical variants - of xenon and krypton. The SAM team ran a series of first-of-a-kind experiments to measure all the isotopes of xenon and krypton in the Martian atmosphere. The experiments are described in a paper published in Earth and Planetary Science Letters. The team's method is called static mass spectrometry, and it's good for detecting gases or isotopes that are present only in trace amounts. Although static mass spectrometry isn't a new technique, its use on the surface of another planet is something only SAM has done. Overall, the analysis agreed with earlier studies, but some isotope ratios were a bit different than expected. When working on an explanation for those subtle but important differences, the researchers realized that neutrons might have gotten transferred from one chemical element to another within the surface material on Mars. The process is called neutron capture, and it would explain why a few selected isotopes were more abundant than previously thought possible. In particular, it looks as if some of the barium surrendered neutrons that got picked up by xenon to produce higher-than-expected levels of the isotopes xenon-124 and 126. Likewise, bromine might have surrendered some of its neutrons to produce unusual levels of krypton-80 and krypton-82. These isotopes could have been released into the atmosphere by impacts on the surface and by gas escaping from the regolith, which is the soil and broken rocks of the surface. "SAM's measurements provide evidence of a really interesting process in which the rock and unconsolidated material at the planet's surface have contributed to the xenon and krypton isotopic composition of the atmosphere in a dynamic way," said Conrad. The atmospheres of Earth and Mars exhibit very different patterns of xenon and krypton isotopes, particularly for xenon-129. Mars has much more of it in the atmosphere than does Earth. "The unique capability to measure in situ the six and nine different isotopes of krypton and xenon allows scientists to delve into the complex interactions between the Martian atmosphere and crust," said Michael Meyer, lead scientist for the Mars Exploration Program at NASA Headquarters in Washington. "Discovering these interactions through time allows us to gain a greater understanding of planetary evolution." NASA's Mars Science Laboratory Project is using Curiosity to determine if life was possible on Mars and study major changes in Martian environmental conditions. NASA studies Mars to learn more about our own planet, and in preparation for future human missions to Mars. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the project for NASA's Science Mission Directorate in Washington. For more information about SAM, visit: http://ssed.gsfc.nasa.gov/sam SAM experiment data are archived in the Planetary Data System, online at: http://pds.nasa.gov For more information about Curiosity, visit: http://www.nasa.gov/msl The research paper is available at: http://dx.doi.org/10.1016/j.epsl.2016.08.028 News Media Contact Written by Elizabeth Zubritsky Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. 818-354-6278 guy.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 2016-249 __ 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
[meteorite-list] AD-ebay auctions Saturday, Sep 30
Aloha Meteorite lovers, Big Kahuna’s regularly scheduled eBay auctions end tomorrow, Saturday, September 30, beginning at 9:00am Pacific / 12:00pm Eastern / 5:00pm London / 7:00pm Helsinki / 12:00am Singapore. FREE Worldwide shipping on select meteorites. Allende CV3 0.55g Fresh fragrant fragment lot - http://tinyurl.com/h8bcra6 Camel Donga Euc 1.19g Glossy crust, bid @ $1 - http://tinyurl.com/jxhmbg6 Dhofar 007 Euc 5.15g Shockingly sweet, bid @ $27 - http://tinyurl.com/gmpw9or Holbrook L/LL6 0.67g Last fusion crusted pea - http://tinyurl.com/jhazleo Peekskill H6 0.07g Fantastic fusion crusted slice - http://tinyurl.com/zh9bvpc NWA x OC 174.33g Delightfully dimpled darling - http://tinyurl.com/jnxfxcm NWA 869 L3-6 1kg lot of individual stones $300 - http://tinyurl.com/h5em9j5 NWA 2086 CV3 2.36g Carbonaceous slice, bid @ $1 - http://tinyurl.com/h9j2xpj NWA 6957 CR2 2.64g Carbonaceous slice, bid @ $7 - http://tinyurl.com/jbgy3ct NWA 7464 Dio 8.90g Vexing Vestan slice - http://tinyurl.com/hab34a4 NWA 7831 Dio 5.65g Pallasite-like slice, bid @ $16 - http://tinyurl.com/zr59p9u NWA 8172 Ureilite 0.54g Awesome achon, bid @ $1 - http://tinyurl.com/j94zcys NWA 10067 R3 1.51g Rumuruti part slice - http://tinyurl.com/gw37nes NWA 10265 Lod 2.33g Green crystals, bid @ $14 - http://tinyurl.com/zaq7cb7 NWA 10826 L3.15 2.18g Unequilibrated endcut - http://tinyurl.com/zoa2fe8 NWA 10827 CM2 0.17g Carbonaceous slice, bid @ $1 - http://tinyurl.com/zd2jqrz Buchwald Handbook of Iron Meteorites trilogy - http://tinyurl.com/grtsapk And many more, which can be seen here: http://www.ebay.com/sch/fujmon/m.html? Gary Fujihara Big Kahuna Meteorites Inc. PO Box 4175, Hilo, HI 96720 (808) 640-9161 http://bigkahuna-meteorites.com/ http://www.ebay.com/sch/fujmon/m.html __ 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-ebay auctions Saturday, Sep 30
Aloha Meteorite lovers, Big Kahuna’s regularly scheduled eBay auctions end tomorrow, Saturday, September 30, beginning at 9:00am Pacific / 12:00pm Eastern / 5:00pm London / 7:00pm Helsinki / 12:00am Singapore. FREE Worldwide shipping on select meteorites. Allende CV3 0.55g Fresh fragrant fragment lot - http://tinyurl.com/h8bcra6 Camel Donga Euc 1.19g Glossy crust, bid @ $1 - http://tinyurl.com/jxhmbg6 Dhofar 007 Euc 5.15g Shockingly sweet, bid @ $27 - http://tinyurl.com/gmpw9or Holbrook L/LL6 0.67g Last fusion crusted pea - http://tinyurl.com/jhazleo Peekskill H6 0.07g Fantastic fusion crusted slice - http://tinyurl.com/zh9bvpc NWA x OC 174.33g Delightfully dimpled darling - http://tinyurl.com/jnxfxcm NWA 869 L3-6 1kg lot of individual stones $300 - http://tinyurl.com/h5em9j5 NWA 2086 CV3 2.36g Carbonaceous slice, bid @ $1 - http://tinyurl.com/h9j2xpj NWA 6957 CR2 2.64g Carbonaceous slice, bid @ $7 - http://tinyurl.com/jbgy3ct NWA 7464 Dio 8.90g Vexing Vestan slice - http://tinyurl.com/hab34a4 NWA 7831 Dio 5.65g Pallasite-like slice, bid @ $16 - http://tinyurl.com/zr59p9u NWA 8172 Ureilite 0.54g Awesome achon, bid @ $1 - http://tinyurl.com/j94zcys NWA 10067 R3 1.51g Rumuruti part slice - http://tinyurl.com/gw37nes NWA 10265 Lod 2.33g Green crystals, bid @ $14 - http://tinyurl.com/zaq7cb7 NWA 10826 L3.15 2.18g Unequilibrated endcut - http://tinyurl.com/zoa2fe8 NWA 10827 CM2 0.17g Carbonaceous slice, bid @ $1 - http://tinyurl.com/zd2jqrz Buchwald Handbook of Iron Meteorites trilogy - http://tinyurl.com/grtsapk And many more, which can be seen here: http://www.ebay.com/sch/fujmon/m.html? Gary Fujihara Big Kahuna Meteorites Inc. PO Box 4175, Hilo, HI 96720 (808) 640-9161 http://bigkahuna-meteorites.com/ http://www.ebay.com/sch/fujmon/m.html __ 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: Sikhote Alin Contributed by: Arlene Schlazer http://www.tucsonmeteorites.com/mpodmain.asp?DD=09/30/2016 __ 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
