Photo: NASA's Mars rover Opportunity is celebrating an amazing nine years on the surface of Mars. The rover has traveled over 22 miles (35 kilometers) since landing on the Red Planet on Jan. 24, 2004. http://oak.ctx.ly/r/20h7
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NASA's Mars rover Opportunity is celebrating an amazing nine years on the surface of Mars. The rover has traveled over 22 miles (35 kilometers) since landing on the Red Planet on Jan. 24, 2004. http://oak.ctx.ly/r/20h7
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