Spirit claims Mars water prize
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Robot Mars rover Spirit has so far been eclipsed in its mission by its &quot;twin&quot; Opportunity, which found rich evidence of a wet history at its landing site.
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The lame wheel on the NASA Mars rover Spirit has proven an invaluable science tool, turning up evidence of a once habitable environment, scientists said Monday.
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New photographs from space suggest that water occasionally flows on the frigid surface of Mars, raising the tantalizing possibility that the Red Planet is hospitable to life, scientists reported Wednesday.
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The Mars rover Spirit found a mineral linked to water during its exploration of the Red Planet, NASA's Jet Propulsion Laboratory said Monday.
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Scientific proof that water once flowed on Mars has been voted the breakthrough of the year. The journal Science said the discovery topped a list of studies that stood out from the many thousands published by scientific journals this year.
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More than two weeks after landing, team members waited for news of the first hole to be drilled on Mars. Spirit was to use its rock abrasion tool to grind a hole in a rock dubbed "Adirondack." Spirit then developed a technical problem that threatened the mission. This is part four of a five-part series covering the Mars rover missions.
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The Mars Exploration Rovers, Spirit and Opportunity, will claim a place in history as tremendous successes. But to get the rovers ready for launch, mission team members had to push themselves to their limits. MER Principal Investigator Steve Squyres explains how they handled the challenge.
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The US space agency NASA says one of its two rovers on Mars has found possible fresh evidence that liquid water existed there in the past.
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By ALICIA CHANG, THE ASSOCIATED PRESS  LOS ANGELES  A provocative new study of photographs taken from orbit suggests that liquid water flowed on the surface of Mars as recently as several years ago, raising the possibility that the Red Planet could harbor an environment favorable to life.
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Now that NASA's Mars Exploration Rover Spirit is finally examining bedrock in the "Columbia Hills," it is finding evidence that water thoroughly altered some rocks in Mars' Gusev Crater.
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LOS ANGELES - NASA&#39;s Mars rover, Opportunity, has found more signs that rocks on the Red Planet were once submerged in water. Data sent by Opportunity suggest a crater was drenched a second time after drying out, scientists said.
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By Warren E. Leary  Pictures of Martian gullies taken several years apart strongly suggest that water still flows at least occasionally on the surface of the planet, scientists have announced.
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Evidence from the Mars exploration rovers Spirit and Opportunity has led scientists to suggest that water was once present in large quantities on the red planet.
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After studying thousands of images from Mars, scientists now are convinced that liquid water once flowed on the surface of the red planet, increasing the odds that life may have existed there in the distant past.
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Jet Propulsion Lab -- Engineers on NASA's Mars Exploration Rover team are investigating possible causes and remedies for a problem affecting the steering on Spirit.     The relay for steering actuators on Spirit's right-front and left-rear wheels did not operate as commanded on Oct...
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Panoramic snap reveals mystery 'figure' A Chinese website has reportedly posted the first sighting of Martian life in the form of a mysterious figure caught on camera by the Spirit rover:â¦
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The Mars rover Spirit has uncovered the strongest evidence yet that the planet used to be wetter than previously thought, scientists reported Monday.