http://www.esa.int/esaCP/SEM9FZNFGLE_index_0.htmlScientists are especially intrigued by the dark vortex shown almost directly over the south pole, a previously suspected but until now unconfirmed structure that corresponds to a similar cloud structure over the north pole. “Just one day after arrival, we are already experiencing the hot, dynamic environment of Venus,” said Dr Hakan Svedhem, Venus Express project scientist. “We will see much more detail at an unprecedented level as we get over 100 times better resolution as we get closer to Venus, and we expect to see these spiral structures evolve very quickly.”
The initial, low-quality images were taken from an extreme distance of 206 452 kms from the planet, yet caught scientists’ attention, particularly with the surprisingly clear structures and unexpected details shown in the VIRTIS spectrometer images.
The false-colour VIRTIS composite image shows Venus’s day side at left and night side at right, and corresponds to a scale of 50 kms per pixel.
The day half is itself a composite of images taken via wavelength filters and chiefly shows sunlight reflected from the tops of clouds, down to a height of about 65 km above the planet’s surface.