The robotic arm on NASA’s Mars 2020 rover does not have deltoids, triceps or biceps, but it can still curl heavy weights with the best. In this time-lapse video, taken July 19, 2019, in the clean room of the Spacecraft Assembly Facility at the Jet Propulsion Laboratory in Pasadena, California, the rover’s 7-foot-long (2.1-meter-long) arm handily maneuvers 88 pounds’ (40 kilograms’) worth of sensor-laden turret as it moves from a deployed to a stowed configuration.
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Source: Phys.org