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25/01/2004 Opportunity rover lands on surface of Mars

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How is Mars Rover Opportunity Still Alive? | Space News

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Mars Rover: Opportunity | National Geographic

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Mars Opportunity Rover

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Mars seen by Opportunity rover [HD]

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Mars Rover Mystery Continues | Space News

It landed three weeks after its twin Spirit. The landing site was in Meridiani Planum. It is a plain which hosts a crystalline hematite. On Earth, hematite is often formed in hot springs or in standing pools of water. Some people therefore believe that there was liquid water on Meridiani Planum in the past.