版权所有 © 中国科技出版传媒股份有限公司 京ICP备14028887号-19 京公网安备 11010102004272号
地址:北京东黄城根北街16号 邮编:100717 Email:elib@cspm.com.cn
Comets are the best samples of primitive solar nebula material presently available to us,dating back 4.6 billion years to the origin of our planetary system.Past missions to comets have all been"fast flybys",they provided only a snapshot view of the dust and ice nucleus,the nebulous coma surrounding it,and how the solar wind interacts with both of these components.
Rosetta is now taking a more prolonged look.The spacecraft is an ESA mission,with contributions from member states and from NASA,and it currently orbits the Jupiter family comet 67P/Churyumov-Gerasimenko.Rosetta met the comet nucleus on 6 August 2014,at 3.7 astronomical units(AU)from the Sun,and delivered the Philae lander to the nucleus surface on 12 November 2014,when the comet was 3.0 AU from the Sun.
The data from the Rosetta allow us to build a detailed portrait of comet 67P.These initial observations provide a reference description of the global shape,the surface morphology and composition,and the bulk physical properties of the nucleus.Subsequent measurements with the orbiter and with the Philae lander will further describe the comet over time.
As a milestone in the history of science,the Rosetta mission is very useful for designing the framework of deep space exploration for our own country.
白春礼党的十八大提出实施创新驱动发展战略,这是我国立足全局、面向未来的重大战略,是促进社会进步和加快转变经济发展方式、破解经济发展深层次矛盾和问题、增强经济发展内生动力和活力的根本...... [更多]
This paper describes the rising of space science and the achievements in space physics and solar physics,space astronomy,lunar and planetary science,space geo-science,space ...... [更多]
Micro/Nano-photonics is a newly emerging subject,which is currently in the cross-development period.It is developed to meet the requirement of the very high operating rate for ...... [更多]
Comets are the best samples of primitive solar nebula material presently available to us,dating back 4.6 billion years to the origin of our planetary system.Past missions to co...... [更多]
Research Progress and Prospect of Neutrino Studies Wang Yifang Neutrino studies,in particular neutrino oscillation studies,are the most exciting topics in the world particle ...... [更多]
Metal-organic frameworks(MOFs) are permanently microporous materials synthesized by assembling metal ions with organic ligands in appropriate solvents.Because of the inherenta...... [更多]