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| | | | | | | La recherche belge autour de Vénus
10 avril 2006
| This is an animation Venus Express performing solar occultation at Venus.
Venus Express is the first mission ever to apply the technique at Venus. The technique consists of looking at the Sun through the atmospheric limb. By analysing the way the sunlight is absorbed by the atmosphere, one can deduce the characteristics of the atmosphere itself.
Credits: ESA (Animation by AOES Medialab) | |  |  | |
| | | | SPICAV/SOIR
| | | | Canal supplémentaire
| This artist's impression shows the trajectory of ESA's Venus Express to its final destination, planet Venus. In the first week of March 2006, the spacecraft crossed the path of the planet around the Sun. The trajectory took it inside the orbit of Venus to ‘anticipate’ the celestial motion of the planet and finally to catch up with it on 11 April 2006. Once at Venus, the spacecraft will have travelled 400 million kilometres. The injection into orbit will put the spacecraft into a first, elongated orbit lasting about 9 days. On 7 May 2006, after a series of manoeuvres and 16 ever smaller loops around the planet, Venus Express will reach its final operational orbit, lasting 24 hours.
Credits: ESA - C. Carreau | | | | |
| | | | Radio Science VeRa
| Through the Venus Radio Science Experiment on board Venus Express - using the powerful radio link bewteen the spacecraft and Earth - scientists will investigate the conditions of the ionosphere of the planet (upper atmospheric layer), and study the local conditions of the solar wind. The experiment will also allow the study of the physical properties of mid atmospheric layers and the roughness and electrical properties of the surface.
Credits: ESA - AOES Medialab | | | | |
| | | | Autre « made in Belgium »
| These two images, respectively taken by the NASA/ESA Hubble Space Telescope in ultraviolet and by the NASA Galileo mission in infrared, show the complex cloud system on Venus. At the cloud top, the atmosphere rotates at a formidable velocity, with wind speeds of up to 360 kilometres per hour. Venus Express is designed to study the cloud system and what mechanisms cause this 'zonal super-rotation'.
Credits: NASA/ESA | | | | |
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| This artist's impression shows Venus Express over the 'double-eye' atmospheric vortex at the planet's North pole. In fact two enormous atmospheric vortices, with very complex shapes and behaviour, rotate vertically over both poles of Venus, recycling the atmosphere downwards. The vortex at the North pole, the only one previously studied in some detail, completes a full rotation in only three days. Venus Express' observations will help understand how the stormy atmospheric circulation on Venus work.
Credits: ESA - AOES Medialab | | | | |
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| | Autres liens Institut d’Aeronomie SpatialeActualités Pôle EspaceObservatoire Royal de Belgique
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