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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Uesugi, Kentaro Nakano, Tsukasa Nakamura, Tomoki Ushikubo, Takayuki Mashio, Etsuko Zolensky, Michael E. Noguchi, Takaaki Sakamoto, Kanako Kakazu, Yuki Tsuchiyama, Akira Valley, John W. Kita, Noriko T. |
| Description | Author Affiliation: Nakamura T ( Department of Earth and Planetary Science, Faculty of Science, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan. tomoki@geo.kyushu-u.ac.jp) |
| Abstract | The Stardust spacecraft returned cometary samples that contain crystalline material, but the origin of the material is not yet well understood. We found four crystalline particles from comet 81P/Wild 2 that were apparently formed by flash-melting at a high temperature and are texturally, mineralogically, and compositionally similar to chondrules. Chondrules are submillimeter particles that dominate chondrites and are believed to have formed in the inner solar nebula. The comet particles show oxygen isotope compositions similar to chondrules in carbonaceous chondrites that compose the middle-to-outer asteroid belt. The presence of the chondrulelike objects in the comet suggests that chondrules have been transported out to the cold outer solar nebula and spread widely over the early solar system. |
| ISSN | 00368075 |
| Issue Number | 5896 |
| Journal | Science |
| Volume Number | 321 |
| e-ISSN | 10959203 |
| Language | English |
| Publisher | American Association for the Advancement of Science (United States) |
| Publisher Date | 2008-09-19 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | History and Philosophy of Science |
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