Rover nears crater science trove
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Nasa's Mars rover Opportunity is closing in on what may be the richest scientific "treasure trove" of its mission.
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The discovery of Mars&#39; watery past by NASA&#39;s Spirit and Opportunity rovers has been chosen as the key scientific advance of 2004 in an annual list compiled by Science magazine.
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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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A rock dubbed &quot;Uchben&quot; in the &quot;Columbia Hills&quot; inside Gusev Crater is seen in this photo released Thursday, Nov. 4, 2004 taken by the Mars Rover Spirit.
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Nasa's robotic Mars rover Opportunity reaches what researchers hope will prove to be a "dream" location -  the 800m-wide Victoria Crater.
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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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NASA's rover Opportunity has reached its first stop inside a huge Martian crater and was poised Thursday to carry out the first science experiments.
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NASA (news - web sites)&#39;s Mars rover Opportunity will back its way out of a crater it has spent four months exploring after reaching terrain that appears too treacherous to tread.
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While a pair of  NASA&nbsp;rovers explore Mars and&nbsp;the Cassini-Huygens mission peers close  at Saturn, two research teams&nbsp;are targeting a more distant planetary  quarry, the ice giant Neptune.
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The  discovery of an iron meteorite sitting on Mars by NASA's Opportunity  rover has kick-started a wide-ranging discussion as to what the find may  be telling us about the planet itself, past water conditions there, and just  how peppered the red planet might be with the fallen objects.
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Nearly three years after landing on Mars, the rover "Opportunity" has reached a region of the planet that may provide the the best clues yet about the history of the red planet.
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NASA&#39;s Mars rover, Opportunity, has discovered more evidence that water may have flowed over rocks on the Red Planet. Data sent back by Opportunity suggests an area known as the Meridiani Planum, was drenched
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It&#39;s the discovery by two Mars rovers that the Red Planet once had water and possibly could have supported life. That recognition comes today from the journal Science.
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NASA will send its Mars rover  Opportunity into a gaping Martian crater in July to seek clues  about the planet&#39;s bygone environment despite risks to the  plucky little vehicle, officials said on Thursday.
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NASA&#39;s Mars rovers have returned new evidence for past water, pictures of Earthlike clouds seen for the first time from the planet&#39;s surface, and a rock that doesn&#39;t look like anything scientists have ever seen.
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NASA's Opportunity Mars rover has come across  an interesting object&nbsp;-- perhaps a meteorite sitting out in the open at Meridiani  Planum. Initial data taken by the robot's Mini-Thermal Emission Spectrometer  (Mini-TES) is suggestive that the odd-looking rock is made of  metal.
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Scientists said Friday they are plotting the next move for the Mars rover Opportunity, which reached the edge of a deep and geologically rich crater last week after a marathon trek.