Atmospheric stripe-like features at Venus

This visible/ultraviolet image of Venus (380 nanometres) was taken by the Ultraviolet/Visible/Near-Infrared spectrometer (VIRTIS) on board ESA’s Venus Express spacecraft on 19 April 2006, during the first orbit (capture orbit) around the planet, from a distance of about 190 000 kilometres.

In the day side (blue part) it is possible to see interesting atmospheric stripe-like structures. Spotted for the first time by Mariner 10 in the 1970s, they may be due to the presence of dust and aerosols in the atmosphere, but their true nature is still unexplained.