Venus Express: scientific goals and payload of the mission

Details Venus Express: scientific goals and payload of the mission Venus Express: scientific goals and payload of the mission

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....13386t&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #13386

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The Venus Express mission aims at a global investigation of Venus' atmosphere and plasma environment from polar orbit, and addresses some aspects of the surface physics. More specifically the scientific goals of the mission are as follows. (1) Study of the atmospheric structure between 40 and 180 km by means of thermal IR sounding, and radio/solar/stellar occultation techniques. (2) Study of the atmospheric composition up to ˜180 km by high resolution spectroscopy in nadir and solar/stellar occultations geometry. Deep atmospheric sounding will fully exploit existence of the near IR transparency "windows" in the spectrum of Venus' nightside. (3) Study of the atmospheric dynamics between 50 and 120 km by tracking cloud features in the UV and IR images and retrieval of the thermal wind field in the mesosphere. (4) Investigation of the plasma environment, its interaction with the solar wind, and escape processes by in situ measurements of the energetic neutral atoms, ions and electrons, and in solar, stellar, and radio occultations. (5) Study of the physical properties of the surface by bi-static radar sounding and thermal mapping. The Venus Express payload consists of the instruments inherited from the Mars Express (ASPERA, PFS, SPICAM, VMC) and Rosetta (MAG, VeRa, VIRTIS) missions. These experiments are able to make a breakthrough in the Venus exploration and to shed a light on the mysteries of the planet. The mission will be a natural continuation of the first phase of Venus exploration by Soviet and American spacecraft. It will also play the role of pathfinder for future, more complex missions to the planet and will help in planning and optimizing future investigations.

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