Fascinerande att två små robotar kravlar omkring på en annan planet och att de dessutom gjort det i 22 månader. Uthålliga små krabater.

Mars rovers showing signs of age

The two robotic vehicles, Spirit and Opportunity, roving the red planet have lasted more than 22 months, far longer than anyone anticipated, said scientists and program managers from the Mars rover program speaking at the American Geophysical Union, an annual conference of earth scientists taking place here this week.

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