Four Views of Mars in Northern Summer

Depicts: Mars
Copyright: Phil James (Univ. Toledo), Todd Clancy (Space Science Inst., Boulder, CO), Steve Lee (Univ. Colorado), and NASA
The group of three dark specks just left of center are all that remain of Cerberus, a very prominent dark region during the Viking and Mariner 9missions. This is an example of the remarkable large scale changes which can occur on Mars due to windblown dust: the former dark area has now been covered by a layer of bright dust, masking the underlying material.
Last Update: 1 September 2019