A Mars rover is an automatic motor vehicle which is driven across the surface of Mars after landing.
Rovers have several advantages over fixed probes: they examine more territory, which can lead to interesting features that can be placed in positions of sunshine for the months of winter weather and can advance the knowledge of how to carry out control rover remote.
There have been three rovers on Mars successfully, all of which were operated robot.
The Jet Propulsion Laboratory managed the Mars Pathfinder mission, with its Sojourner and currently manages the Mars Exploration Rover, with its two rovers, Spirit and Opportunity, the NASA Office of Space Science, Washington, DC. (There have also been two successful Mars rovers are not: in the 1970 Soviet Lunokhod sent two vehicles to the moon.
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