NASA's Spirit and Opportunity rovers have been two of the agency's most successful robotic projects. While Spirit was given up for dead last year, both rovers worked on the Martian surface for more than six years -- far longer than the three months that NASA initially expected them to last.
However, the rover Opportunity continues its work. It has been upgraded with artificial intelligence software to enable the robot to make some of its own decisions about what rocks or geological formations it should stop and analyze.
Sharon Gaudin covers the Internet and Web 2.0, emerging technologies, and desktop and laptop chips for Computerworld. Follow Sharon on Twitter at @sgaudin, on Google+ or subscribe to Sharon's RSS feed. Her email address is email@example.com.
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