Summary - (Apr 11, 2004) NASA has extended the mission for its Mars Exploration Rovers, Spirit and Opportunity, after Spirit met the success criteria for its mission. It spent a total of 90 days roaming the surface of Mars, and traveled a total distance of 600 metres. Opportunity will achieve its successful mission on April 26. This extension includes an additional $15 million in funding to keep operating the rovers until September. Even though the mission has been approved until then, the rovers could last much longer on the surface of Mars.

Source: Universe Today