Mars rover
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Squeaky-clean NASA rover Opportunity says, 'But first, let me take a selfie'
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Mars water discovered in Gusev crater? Spirit rover sends new evidence to NASA
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Crater on Mars once held a 'here today, gone tomorrow' lake of water, scientists say
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Curiosity arrives at next destination on Mars: What's that strange light? Aliens?
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Mars Yard tests new rover for 2018 mission
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