This image mosaic taken by the
Mars Exploration Rover Spirit's panoramic camera shows the hills
southeast of Spirit's landing site. Like a smoggy day in a big
city, dusty martian skies limit how much detail can be seen. This
lack in visibility is demonstrated by comparing hills on the left
to those on the right. The left panel of this image was captured
in the late morning martian hours, looking towards the sun. The
right image was taken in the early afternoon, when the sun was
higher and the skies appeared darker.
