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.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/9-nasasmars202.jpg)
Source:
https://phys.org/news/2019-07-nasa-mars-rover-biceps.html