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Diagnostic Tests Planned for Instrument on Mars Rover
NASA has suspended use of one of the mineral-identifying tools on the Opportunity Mars rover .
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Mars Rovers Break Driving Records, Examine Soil
On three consecutive days, Opportunity accomplished unprecedented feats of martian motion.
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Twin Mars Rovers Still Going Strong
NASA's Spirit rover found a new class of water-affected rock, while its twin, Opportunity, finished inspecting its own heat shield and set a new martian driving record.
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Rover Finds an Iron Meteorite on Mars
Opportunity has found an iron meteorite, the first meteorite of any type ever identified on another planet.
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Reports Detail Rover Discoveries
The most dramatic findings so far from NASA's twin Mars rovers -- telltale evidence for a wet and possibly habitable environment in the arid planet's past -- passed rigorous scientific scrutiny for publication in a major research journal.
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Rover to Reverse Course to Exit Crater
Operators of NASA's Mars Exploration Rover Opportunity have determined that a proposed route eastward out of "Endurance Crater" is not passable.
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Spirit Adds Clues About Martian Hills
All the scientific tools on NASA's two Mars Exploration Rovers are still working well, a full 10 months after Spirit's dramatic landing.
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Rovers Pass 50,000-Picture Mark
A view of the sundial-like calibration target on NASA's Mars Exploration Rover Spirit is the 50,000th image from the twin rovers that have been exploring Mars since January.
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Team Analyzing Mars Rover Developments
NASA's Mars rover team is working both to resolve an intermittent problem that affects steering on Spirit and also to understand a marked improvement in Opportunity's power supply.
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Mars Rovers Probing Water History
New findings raise the possibility Opportunity's work area was soaked long ago, before it dried and eroded into a wide plain.
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Team Checks Rover's Steering
Engineers on NASA's Mars Exploration Rover team are investigating possible causes and remedies for a problem affecting the steering on Spirit.
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Mars Orbiter Sees Rover Tracks and More
Using an innovative technique to capture sharper images, NASA's Mars Global Surveyor spied tracks from Spirit on the surface of Mars.
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Rover Missions Renewed Again
As NASA's Spirit and Opportunity rovers resumed reliable contact with Earth, after a period when Mars passed nearly behind the Sun, the space agency extended funding for an additional six months of rover operations, as long as they keep working.
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Opportunity Tool Back at Work
NASA's Mars Exploration Rover Opportunity has resumed using its rock abrasion tool.
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Martian Bedrock Hints at Watery Past
NASA's Spirit rover is finding evidence that water thoroughly altered some rocks in Mars' Gusev Crater.
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Latest on the Mars Rovers
Spirit has climbed into rocky hills and Opportunity has gone into a crater but both rovers, for the time being, are operating with some restrictions.
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Rocks Tell Stories
Scientific findings from the NASA rover Spirit's first three months on Mars will be published Friday, marking the start of a flood of peer-reviewed discoveries in scientific journals from the continuing two-rover adventure.
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Rovers Roll Into Martian Winter
Opportunity inches deeper into a crater while Spirit prepares to go up a hill.
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Mars Rover Surprises Continue
On challenging slopes that NASA's Mars rovers began exploring this month, both Spirit and Opportunity have found new surprises for the folks back home.
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Mars Rovers Going the Extra Mile
NASA's Mars rovers are delighting scientists with their extra credit assignments.
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