What was the singular objective of the Mars Exploration Rover *Spirit*?

Answer

To determine if ancient Mars ever possessed the necessary conditions to support life.

The rover's singular, profound objective was to look for definitive geological evidence of past liquid water activity to determine if ancient Mars had the necessary conditions to support life.

What was the singular objective of the Mars Exploration Rover *Spirit*?

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Did Spirit really find hot spring deposits on Mars? - YouTube

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