Exploring the Solar System

Exploring Mars

What equipment did the Sojourner rover carry?

Sojourner had several scientific instruments onboard, such as an alpha-proton X-ray spectrometer, which was used to analyze the chemical composition of soil and rocks that it encountered. Several of the rocks it encountered had distinctive shapes, which led the Pathfinder scientists to give them colorful names like “Yogi” and “Barnacle Bill.”

The Mars Global Surveyor took this first-ever three-dimensional image of the north pole of Mars. The vertical scale on this visualization is exaggerated to show greater detail. (NASA)


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