Bruce Murray Space Image Library
Mars from Hubble, January 2008
Occupying the upper left quadrant is the bright red of Tharsis, and at upper center and right is the dark blob of Acidalia. Below Acidalia, a bright extension from the Tharsis region is Chryse planitia, where both Viking 1 and Pathfinder landed. Below that, at the center of the disk, is a darker region made of Solis Lacus at left, Aurorae Sinus at center, and on the right-hand edge of the disk, Sinus Meridiani, where Opportunity still roves. A bright blob called Argyre is at the bottom of the disk, and over all of it is printed wispy white clouds, made of water vapor.