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Tópico em 'Astronomia' iniciado por Vince 29 Nov 2007 às 22:11.
Venus: Earth’s twin planet?
ESA’s Venus Express has revealed Venus as never before. For the first time, scientists are able to investigate from the top of its atmosphere, down nearly to the surface. They have shown it to be a planet of surprises that may once have been more Earth-like, and still is, to a certain extent.
Venus Express has been making the most detailed study of the planet’s thick and complex atmosphere to date. The latest findings highlight the features that make Venus unique in the Solar System and provide fresh clues as to how the planet is - despite everything - a more Earth-like planetary neighbour than one could have imagined.
This movie, obtained by images taken by the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) on board ESA’s Venus Express shows the south polar vortex on the night side, also providing a view of the cloud system at Venus.
The images were obtained at 1.7 micrometres between February and April 2007, at a distance of 65 000 km from the planet. The figure shows morphology and dynamics of the lower clouds following the giant polar vortex.
(c) Folha de S.Paulo
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