Backup MSL Rover at JPL Mars Yard

The backup Mars Science Laboratory (MSL) Rover is seen here parked in its garage adjacent to the Mars Yard at the Jet Propulsion Laboratory (JPL), an area designed with rock and terrain to mimic the surface of Mars.  Before operation commands are sent to the primary MSL Curiosity Rover on Mars, they are often tested on this identical robot.

A flight spare of the much smaller Sojourner Rover that landed on Mars in 1997 is visible nearby.

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