School of Atmospheric Sciences Sun Yat-sen University Zhuhai Guangdong 519082 ChinaKey Laboratory of Lunar and Deep Space Exploration National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 ChinaChinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230000 China;
Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 ChinaSchool of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing 100049 China;
Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 ChinaSchool of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing 100049 China;
Chinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230000 ChinaSchool of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China;
Mars; Venus; exosphere; ionosphere; magnetosphere;