NASA's Jet Propulsion Laboratory News and Features: Researchers determine the Martian rock resembling a jelly doughnut is a piece of a larger rock broken and moved by the wheel of NASA's Mars Exploration Rover Opportunity.
NASA's Jet Propulsion Laboratory News and Features: Researchers determine the Martian rock resembling a jelly doughnut is a piece of a larger rock broken and moved by the wheel of NASA's Mars Exploration Rover Opportunity.
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