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The full-scale engineering model of NASA's Perseverance rover raises its "head," or remote sensing mast, at NASA's Jet Propulsion Laboratory in Southern California. This model is known as the vehicle system test bed (VSTB) rover, or OPTIMISM (Operational Perseverance Twin for Integration of Mechanisms and Instruments Sent to Mars). OPTIMISM raised its mast shortly after moving into its new home at JPL's Mars Yard on Sept. 4, 2020. The mast hosts many of the rover's cameras and scientific instruments. At the top of the mast, the large circular opening is where the SuperCam instrument will be i…
