The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
Go to topicThank you for liking
You have already liked this page, you can only like it once!
This triple image provides a close-up view of the double-eyed vortex at Venus south pole, as seen by the Ultraviolet/Visible/Near-Infrared spectrometer (VIRTIS) on board ESA’s Venus Express. The images were taken on 29 May 2006, from a distance of about 64 000 kilometres from the planet. All the separate images can be downloaded here:
- South
polar_vortex close up_1_b.gif
- South
polar_vortex close up_1_b.tif
- South
polar_vortex close up_3_b.tif
- South
polar_vortex close up_2_b.tif
The vortex is imaged at different infrared wavelengths, corresponding to different atmospheric depths. The left image (taken at 5.05 microns) correspond to an atmospheric altitude of about 59 kilometres, just about the Venusian cloud deck. The central image (taken at 4.65 microns) corresponds to an atmospheric altitude of about 60 kilometres. The right image (taken at 4.08 microns) corresponds to an altitude of about 65 kilometres, just in the upper clouds. The images were taken with a 20º inclination with respect to vertical pointing.
The brighter the colour, the more radiation is reaching out from the hot layers below. The brightest spot correspond to the centre of the vortex, where radiation from the deeper layers become clearly visible , like looking through a hole.
The dark circular structures surrounding the brighter area belong to the big vortex structure (bottom of the images) - as large as a big portion of Europe (2500 kilometres across) - and are part of the planet atmospheric super-rotation. The left image also clearly shows a complex structure, where many more small structures are visible.