Mars Exploration Rovers spacecraft as used by SimNASA (http://www.simnasa.org). During the summer of 2003 NASA launched both MER-A "Spirit" and MER-B "Opportunity" to Mars. Likewise SimNASA, a virtual space agency, recreated these same missions according to its own timetabe, parameters, and simplified flight plans. This archive contains all configuration files to recreate the current NASA MER missions. UPDATED meshes and configurations. INCLUDES missing textures. Requires Vinka spacecraft.dll. Distrubution limited to individuals. Group use is prohibited.