In August 2005 the robotic rover Spirit explored the surface of what?
Spirit (rover) months on the ridge, spending that time undertaking observations of changes in the surrounding area. No drives were attempted because of the low energy levels the rover was experiencing during the Martian winter. The rover made its first drive, a short turn to position targets of interest within reach of the robotic arm, in early November 2006, following the shortest days of winter and solar conjunction when communications with Earth were severely limited. While at Low Ridge, "Spirit" imaged two rocks of similar chemical nature to that of "Opportunity"'s Heat Shield Rock, a meteorite on the surface of Mars. Named
Spirit (rover) March 11, 2004, "Spirit" reached Bonneville crater after a journey. This crater is about across with a floor about below the surface. JPL decided that it would be a bad idea to send the rover down into the crater, as they saw no targets of interest inside. "Spirit" drove along the southern rim and continued to the southwest towards the Columbia Hills. "Spirit" reached Missoula crater on sol 105. The crater is roughly across and deep. Missoula crater was not considered a high priority target due to the older rocks it contained. The rover skirted the northern rim, and continued