Prof. Zhenxing Liu, space physicist and academician of Chinese Academy of Sciences,was born in Changle County in Shandong Province on Sep, 14th 1929, graduated from the department of meteorology in Nanjing University and in 1957 was matriculated as a vice-doctoral graduate student by institute of geophysics, Chinese Academy of Sciences, whose tutor is Jeou-jang Jaw who is an academician in former institute of geophysics as well as graduated in May, 1961 with deputy doctorate. Now, in Center for Space Science and Applied Research, Chinese Academy of Sciences, Prof. Zhenxing Liu occupies researcher, tutor, deputy director of Academic Committee and Academic Degree Committee, chief scientist of China's Geospace Double Star Exploration Program, director of China's Cluster Data Research Center, commissioner of European Space Agency (ESA) Cluster Scientific Data System Committee, Chairman of Chinese Committee of International Association of Geomagnetism and Aeronomy (IAGA) and so forth.

From 1955 to 1959, Prof. Zhenxing Liu mainly engaged in near-earth atmospheric physics research. It is in this period that he bent his mind to research of terrestrial atmometry, characteristics of turbulent knot, and sands blown by winds in the northwestern part of China, meanwhile, research findings were published on 《Science Records》 and 《Meteorological Bulletin》. From 1959 to 1961, he started on research about upper atmospheric exploration by rockets and satellites, and then he put forward a new way of territorial compartmentalization between theory of meteors and aerodynamics, which of research findings were published on 《China Science》 and 《Chinese Journal of Geophysics》. After 1961, he started on research of interplanetary physics and magnetospheric physics. In some of the important advanced fields of magnetosphere physics, hemade systematic creative achievements including theory of earth radiation belt, turbulent structure of solar wind, model of Jovian magnetosphere, principle of particle acceleration in auroral region, process of magnetospheric substorm, theory of magnetosphere and magnetic field re-combination and so on, as well as published 160 pieces of papers on domestic and foreign academic publications, 6 cooperative compilations.

Chief science and technology achievements of Liu Zhenxing involved in the following aspects:

Firstly, in 1985, Prof. Zhenxing Liu broke traditional theory of magnetic field re-combination that lasted more than thirty years and put forward new mechanism of hydro-VIR (vorticity inducement of re-combination of magnetic field), synchronously, create VIR theory to break a new path for research of magnetic field re-combination. As a result, international experts who are in the same field admittedly think that the VIR theory is one of the three most essential models of instantaneous magnetic field re-combination.

Secondly, from 1981 to 1982, according to the exploration data from "traveler" spacecraft, Prof. Zhenxing Liu established a new model of Jovian magnetosphere, which put the different rotate speed between undulated structure of Jovian disk and plasma into his research. He found that the thickness of Jovian magnetic disk depends on ratio of plasmatic vortical energy to heat energy, and explained that characteristics of physical parameter-transformation on thickness of Jovian plasma sheet and plasma, whose chief achievement, named "Liu's Model", was collected into《Jovian Magnetosphere Physics》, published by University of Cambridge.

Thirdly, Prof. Zhenxing Liu made great contributions towards promoting the development of China's space exploration and the cooperation with ESA. As early as 1991, Prof. Zhenxing Liu cooperated with ESA on Cluster science data system (including 4 satellites). With his efforts, on Nov. 24th 1993, subscribed cooperative agreement happened between CAS and ESA as well as in China formed Chinese Cluster Data and Research Center and the Cluster scientific team, which director and Chief Scientist of the center and team were occupied by Prof. Zhenxing Liu. Now, China has been the formal member of ESA Cluster scientific data system. The two spacecrafts of Cluster II have been successfully launched on Jul. 16th, 2000 and Aug. 9th, 2000, respectively. In order to reward Prof. Zhenxing Liu for his outstanding contribution to Cluster II, ESA awarded Prof. Zhenxing Liu certificate that has been signed by director general of ESA. At present, China Cluster Data Center has continuously obtained exploration data, appeared by 44 instruments from 4 satellites of Cluster II, that will react to Chinese space physics and space weather forecast.

Fourthly, for development of Chinese space exploration, after Prof. Zhenxing Liu has put forward DSP in 1997, while immediate attention gave by scientists from international space, ESA actively cooperated with China. In Dec. 2000, Chinese State Department formally approved the DSP.

On Jul. 9th, 2001, director general of China National Space Administration and director general of ESA jointly signed the contract for DSP cooperation at the HQ of ESA. The coordination of DSP with cluster including 4 satellites formed geospace "6 points exploration" for the first time. Equatorial satellite was launched in Dec. 2003, while polar satellite was launched in Jun. 2004. The success of DSP played an important role for the improvement of creative abilities in space physics, weather forecast, raising China's status in the field international space research.

Because of the great contributions he made to research on science and technology, Prof. Zhenxing Liu won various domestic and foreign honors. In 1984, he was approved as one of the first young experts who made outstanding contributions to China. In 1992, he won the medal of Toulouse Mayor (European Space City). In 2000, he was awarded 2000 Bikram Sarabhai by COSPAR and Indian Space Research Organization. In Nov. 2001, he won the "Outstanding Contribution to Cluster II" certificate. In China, he successively won a lot of prizes, including the prize of National Scientific Congress in 1978, the third of national natural science in 1987, the first of natural science of Chinese Academy of Sciences in 1993, the third of national natural science in 1995, the second of national natural science and the prize of He Liang He Li fund science and progress in 2001.