Raging winds on Venus

Raging winds on Venus

Fig. 3.4 . A high-velocity wind whips the upper layer of Venus's cloud deck around the planet's equator once every four Earth days, moving at speeds of up to 100 meters per second. These photographs taken at ultraviolet wavelengths on consecutive days by the Pioneer Venus spacecraft in 1979 illustrate this. The Y-shaped clouds move towards the west (left). A zonal east-to-west circulation dominates the winds of Venus. The low atmosphere and the planet's surface also rotate westward, but with the much slower period of 243 Earth days. (Courtesy of NASA/Larry Travis.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University