PHOTOS: Postcards From Mars

Opportunity rover still going after 8 years on Martian surface.

PHOTOS: Postcards From Mars

Postcards From Mars
Postcards From Mars
Postcards From Mars: Rovers' Exploits
Postcards From Mars: Rovers' Exploits
Postcards From Mars: Rovers' Exploits
Postcards From Mars: Rovers' Exploits
Mars Rover
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Mars
Mars
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Mars
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Mars
Mars
The Opportunity rover dragged one of its wheels back and forth across the sandy soil to dig a small trench -- one way to study the Martian dirt for clues to mineral composition and history. (NASA)
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