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Opportunity, which is about the size of a golf cart, recently captured this false-color panoramic view of a wind-blown ripple called "Scylla."
These before and after images depict an encounter by Opportunity's rock abrasion tool with a rock target dubbed "Kalavrita." The circle is about 1.8 inches across.
Early in the mission, scientists plotted a traverse course that would take Spirit up "Husband Hill." The route was chosen so that the rover's solar panels would face the Sun and the antenna would point toward Earth.