Things - Steven Green
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Mars Exploration Rover (MER)

Close-up of a wheel on the Mars Exploration Rover (MER) model on display at the Smithsonian Air and Space Museum in Washington, DC.

MERMars Exploration RoverNASASmithsonianSteven Green PhotographySteven R.GreenWashington DCcapitolexplorationmodelspacesteve greenwalkaboutwheel