Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.6201s&link_type=abstract
American Astronomical Society, DPS meeting #40, #62.01; Bulletin of the American Astronomical Society, Vol. 40, p.512
Astronomy and Astrophysics
Astronomy
Scientific paper
Venus Express has been in orbit around Venus since May 2006 and has since then delivered a large amount of new and unique information on our sister planet. The atmosphere has been mapped in three dimensions and at regular intervals time lapse movies have been generated in order to make detailed characterization of the circulation patterns at different altitudes. The thermal structure has been investigated with several different but complementary techniques to cover the range between 40km and 140 km. The surface temperature has been mapped over a large part of the southern hemisphere and regions with anomalous emissivity have been studied in some detail. The chemical analysis has characterised a large number of species and detected for the first time the radical hydroxyl. Existence of frequent lightning has been inferred from whistler waves detected by the magnetometer. Escape rates of hydrogen, oxygen and helium have been estimated.
Recently the pericentre altitude was reduced to 185 km in order to better characterize, in situ, the magnetic fields and energetic particle environment.
This talk will provide a summary of the most important results and give a status update of the mission.
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