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Updated with new features, including additional mobility software and the bulk of the sample caching system, the Earthly twin of NASA's Perseverance Mars rover arrives at the Mars Yard garage at the agency's Jet Propulsion Laboratory on Oct. 29, 2021. The vehicle is generically referred to as a vehicle system test bed but goes by the name OPTIMISM (short for Operational Perseverance Twin for Integration of Mechanisms and Instruments Sent to Mars). As with vehicle system test beds for other Mars rovers, OPTIMISM is used to test moves and scenarios in the Mars Yard's simulated Red Planet landsc…
