NASA's Mars rover starts to think for itself
After seven years of working on the surface of Mars, NASA's Mars rover Opportunity has been upgraded to allow it to make some of its own decisions.
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NASA abandons Mars rover rescue efforts
After six years roaming across and working on Mars, NASA's Mars Exploration Rover Spirit has been deemed permanently stuck in dirt on the planet's surface.
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NASA: Options dwindling for Mars Spirit rover
NASA says it is narrowing a short list of things its scientists can to extricate its stuck Mars Spirit rover.
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NASA to power Mars rover out of sand trap
NASA's long running Mars rover is stuck in a sand trap – a situation the space agency would like to fix. So NASA will begin what it called the long process of extricating Spirit by sending commands that could free the rover.
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NASA probing trouble with long-running Mars rover
NASA scientists are putting together diagnostic tests to find out why one of the space agency's two Mars rovers began failing to respond to instructions over the weekend.