At the very beginning of spring in the southern hemisphere on Mars the ground is covered with a seasonal layer of carbon dioxide ice.
In a region of the south pole known informally as "Ithaca" numerous fans of dark frost form every spring.
The south polar terrain on Mars contains landforms unlike any that we see on Earth, so much that a new vocabulary is required to describe them.
In a region near the south pole of Mars translucent carbon dioxide ice covers the ground seasonally.
Have you ever found that to describe something you had to go to the dictionary and search for just the right word?
This composite shows four examples of "browse" products the Compact Reconnaissance Imaging Spectrometer for Mars instrument obtained of areas on Mars near proposed landing sites for NASA's 2009 Mars Science Laboratory.
The image was taken as part of a campaign to examine more than two dozen candidate landing sites for the NASA Mars Science Laboratory rover, which is scheduled for launch in 2009.
Layers inside Holden Crater in the southern hemisphere of Mars are shown in enhanced color in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.