Twisted paths of dust devils on Mars

Twisted paths of dust devils on Mars

Fig. 8.9 . Spinning columns of warm air, called dust devils, rise above the Sun-heated surface of Mars. Each tornado-like vortex picks up light-colored dust, exposing the darker surface underneath. Dust devils have created this wild pattern of criss-crossing dark streaks in the rippled flats of Argyre Planitia, covering an area 3 by 5 kilometers at latitude of 51 degrees south. This image was taken from the Mars Global Surveyor in March 2000. (Courtesy of NASA/JPL/MSSS.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University