Radar observations of Venus have established a 243-day period of its rotation. However, photographs taken in the ultraviolet range

Radar observations of Venus have established a 243-day period of its rotation. However, photographs taken in the ultraviolet range showed that the rotation period of the planet is four days. How to combine the results of radar and photographic observations?

Photographic observations in ultraviolet rays record changes in the upper layers of the cloud layer. Winds at these altitudes, blowing in the latitudinal direction, reach 100 m / s.

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