Is There Life on Mars?
This video examines Mars. NASA's two robot explorers, Spirit and Opportunity, first landed on Mars in January 2004. The rovers were expected to function for the initial 90-Martian-day (sol) primary mission. Since that time, the Rovers have lasted 16 times longer and traveled 20 times farther. The two rovers continue to search for clues if Mars supported microbial life and if Mars once had water. Along with the Phoenix probe, Spirit and Opportunity continue to carry out missions designed by NASA.