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Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust.

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Title: Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust.
Authors: Flynn, George J., Bleuet, Pierre, Borg, Janet, Bradley, John P., Brenker, Frank E., Brennan, Sean, Bridges, John, Brownlee, Don E., Bullock, Emma S., Burghammer, Manfred, Clark, Benton C., Zu Rong Dai, Daghlian, Charles P., Djouadi, Zahia, Fakra, Sirine, Ferroir, Tristan, Floss, Christine, Franchi, Ian A., Gainsforth, Zack, Gallien, Jean-Paul
Source: Science (pre-March 2025). 12/15/2006, Vol. 314 Issue 5806, Special Section p1731-1735. 5p.
Subjects: Solar system, Chemical elements, Comets, Meteorites, Particles, Meteorite craters, Cratering, Metals, Cosmic abundances
Abstract: We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemically heterogeneous at the largest size scale analyzed (∼180 ng). The mean elemental composition of this Wild 2 material is consistent with the CI meteorite composition, which is thought to represent the bulk composition of the solar system, for the elements Mg, Si, Mn, Fe, and Ni to 35%, and for Ca and Ti to 60%. The elements Cu, Zn, and Ga appear enriched in this Wild 2 material, which suggests that the CI meteorites may not represent the solar system composition for these moderately volatile minor elements. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust.
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 12/15/2006, Vol. 314 Issue 5806, Special Section p1731-1735. 5p.
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  Data: We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemically heterogeneous at the largest size scale analyzed (∼180 ng). The mean elemental composition of this Wild 2 material is consistent with the CI meteorite composition, which is thought to represent the bulk composition of the solar system, for the elements Mg, Si, Mn, Fe, and Ni to 35%, and for Ca and Ti to 60%. The elements Cu, Zn, and Ga appear enriched in this Wild 2 material, which suggests that the CI meteorites may not represent the solar system composition for these moderately volatile minor elements. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1126/science.1136141
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        Text: English
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