Mars Exploration Rover, Vertical Artist Concept
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An artist's concept portrays a NASA Mars Exploration Rover on the surface of Mars. Two rovers, Spirit and Opportunity, will reach Mars in January 2004. Each has the mobility and toolkit to function as a robotic geologist. http://photojournal.jpl.nasa.gov/catalog/PIA04928 — NASA JPL · 2003. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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