January 2007 marks the start of the fourth year on Mars for NASA's Spirit and Opportunity rovers. The two hardy explorers, along with several orbiting spacecraft, are capturing unique views that help us learn more about our planetary neighbor. With the next mission scheduled to launch in August 2007, the red planet is indeed ready for its closeup.
At left, NASA's Mars rover Opportunity reached "Victoria Crater" in October 2006. The crater provides a whole new vista to explore in 2007.
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