Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aak9384 |
Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past | |
El-Maarry, M. Ramy1; 39;Hearn, M. F.2 | |
2017-03-31 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 355期号:6332页码:1392-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; USA; France; Germany; Italy; Spain; Sweden; Poland; Taiwan |
英文摘要 | The Rosetta spacecraft spent similar to 2 years orbiting comet 67P/Churyumov-Gerasimenko, most of it at distances that allowed surface characterization and monitoring at submeter scales. From December 2014 to June 2016, numerous localized changes were observed, which we attribute to cometary-specific weathering, erosion, and transient events driven by exposure to sunlight and other processes. While the localized changes suggest compositional or physical heterogeneity, their scale has not resulted in substantial alterations to the comet's landscape. This suggests that most of the major landforms were created early in the comet's current orbital configuration. They may even date from earlier if the comet had a larger volatile inventory, particularly of CO or CO2 ices, or contained amorphous ice, which could have triggered activity at greater distances from the Sun. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397809500035 |
WOS关键词 | IMHOTEP REGION ; NUCLEUS ; ROTATION ; OSIRIS ; SHAPE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/195727 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Bern, Inst Phys, CH-3012 Bern, Switzerland; 2.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80301 USA; 3.Aix Marseille Univ, CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille, France; 4.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 5.Jet Prop Lab, Pasadena, CA 91109 USA; 6.Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany; 7.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, D-12489 Berlin, Germany; 8.Sorbonne Univ, Univ Paris Diderot, PSL Res Univ,CNRS,LESIA, UPMC Univ Paris 06,Observ Paris,Sorbonne Paris Ci, F-92195 Meudon, France; 9.Univ Padua, Dept Phys & Astron, I-35122 Padua, Italy; 10.CNRS, Lab Astrophys Marseille, UMR 7326, F-13388 Marseille 13, France; 11.Univ Aix Marseille, F-13388 Marseille 13, France; 12.Inst Nacl Tecn Aeroespacial, Ctr Astrobiol, Madrid 28850, Spain; 13.Int Space Sci Inst, CH-3012 Bern, Switzerland; 14.European Space Astron Ctr ESA, Operat Dept, POB 78, Madrid 28691, Spain; 15.Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany; 16.Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden; 17.Polish Acad Sci, Space Res Ctr, PL-00716 Warsaw, Poland; 18.Univ Maryland, Dept Astron, College Pk, MD 20742 USA; 19.Univ Versailles St Quentin En Yvelines, Lab Atmospheres Milieux Observat Spatiales LATMOS, Inst Pierre Simon Laplace, CNRS, F-78280 Guyancourt, France; 20.Osserv Astron Padova, Ist Nazl Astrofis, I-35122 Padua, Italy; 21.CNR, Ist Foton & Nanotecnol, Unita Org Supporto, Padova Luxor, I-35131 Padua, Italy; 22.Univ Padua, Dept Ind Engn, I-35131 Padua, Italy; 23.Univ Trento, I-38123 Trento, Italy; 24.Osserv Astron Trieste, INAF, I-34014 Trieste, Italy; 25.Inst Astrofis Andalucia CSIC, C Glorieta Astron S-N, Granada 18008, Spain; 26.Natl Cent Univ, Grad Inst Astron, Chungli 32054, Taiwan; 27.Southwest Res Inst, Virtual Inst, Solar Syst Explorat Res, Boulder, CO 80302 USA; 28.Univ Padua, Dept Informat Engn, I-35131 Padua, Italy; 29.Univ Padua, Ctr Ateneo Studi & Attivita Spaziali Giuseppe Col, I-35131 Padua, Italy |
推荐引用方式 GB/T 7714 | El-Maarry, M. Ramy,39;Hearn, M. F.. Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past[J]. SCIENCE,2017,355(6332):1392-+. |
APA | El-Maarry, M. Ramy,&39;Hearn, M. F..(2017).Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past.SCIENCE,355(6332),1392-+. |
MLA | El-Maarry, M. Ramy,et al."Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past".SCIENCE 355.6332(2017):1392-+. |
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