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• W2000354037 abstract "Research Article| January 01, 2008 Oxygen in Comets and Interplanetary Dust Particles Scott A. Sandford; Scott A. Sandford 1NASA Ames Res. Center, Astrophysics Branch, Moffett Field, CA 94035, U.S.A., e-mail (corresponding author): ssandford@mail.arc.nasa.gov Search for other works by this author on: GSW Google Scholar Scott Messenger; Scott Messenger 2NASA Johnson Space Center, Astromaterials Res. Office, Houston, TX 77058, U.S.A. Search for other works by this author on: GSW Google Scholar Michael DiSanti; Michael DiSanti 3NASA Goddard Space Flight Center, Greenbelt, MD 20771, U.S.A. Search for other works by this author on: GSW Google Scholar Lindsay Keller; Lindsay Keller 2NASA Johnson Space Center, Astromaterials Res. Office, Houston, TX 77058, U.S.A. Search for other works by this author on: GSW Google Scholar Kathrin Altwegg Kathrin Altwegg 4University of Bern, Physikalisches Institut, Bern 3012, Switzerland Search for other works by this author on: GSW Google Scholar Reviews in Mineralogy and Geochemistry (2008) 68 (1): 247–272. https://doi.org/10.2138/rmg.2008.68.11 Article history first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Scott A. Sandford, Scott Messenger, Michael DiSanti, Lindsay Keller, Kathrin Altwegg; Oxygen in Comets and Interplanetary Dust Particles. Reviews in Mineralogy and Geochemistry 2008;; 68 (1): 247–272. doi: https://doi.org/10.2138/rmg.2008.68.11 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyReviews in Mineralogy and Geochemistry Search Advanced Search Abstract Comets are thought to have accreted in the cold, outer portions of the protosolar nebula when our Solar System was forming, and they clearly contain a higher proportion of volatiles than materials formed closer in to the Sun. Storage of most comets in the cold, outer regions of the Solar System since their formation has probably helped minimize any subsequent parent body processing of their contents. As a result, cometary materials may represent samples that best preserve the original components from which our Solar System was made. Comparison of cometary and asteroidal materials (which formed much closer to the Sun) can also provide insights into large-scale heterogeneity and transport of materials in the early solar nebula. Comets are also of considerable interest since they may have delivered volatiles, like H2O, to the early cooling Earth, thereby playing a key role in making the Earth habitable. Comets should also have delivered organic materials to the surface of the early Earth and these, depending on their nature, may have played a role in the origin of life. Thus, the study of the composition of comets has the potential to provide important insights into the formation and evolution of our Solar System (and by extension, other planetary systems), and the creation of an inhabited Earth.The study of the chemistry, mineralogy, and isotopic distributions of oxygen in cometary materials can provide unique information that addresses these issues. Our current knowledge of the nature of oxygen in comets is based on several different lines of evidence, including remote telescopic and spacecraft observations of comets, direct laboratory analyses of extraterrestrial samples, and in situ measurements of a small number of individual comets. Information derived from these different approaches suggests that the chemical, mineralogical, and isotopic state of oxygen in these primitive bodies is extremely variable, i.e., comets appear to be made up of a wide range of very different components that are considerably out of equilibrium with each other. This is consistent with the idea that cometary materials should have largely escaped extensive parent body processing.The study of samples recently returned from Comet 81P/Wild 2 by the Stardust spacecraft has immensely improved our understanding of cometary materials. Of particular interest is the observation that these samples contain intimate mixtures of both volatile and refractory oxygen-bearing materials. This suggests that while comets formed in the outer reaches of the protosolar disk, they were constructed of materials that had originally formed and evolved in a wide variety of locations that spanned essentially the entire radial extent of the protosolar nebula. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
• W2000354037 created "2016-06-24" @default.
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• W2000354037 date "2008-01-01" @default.
• W2000354037 modified "2023-10-16" @default.
• W2000354037 title "Oxygen in Comets and Interplanetary Dust Particles" @default.
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