The Mars rovers are now going on 6 years of crawling around the Martian surface looking for evidence of life. Of the two, Spirit has had the toughest time of it, losing the use of one of it's six wheels forcing it to continue its trek backwards since 2006. In April it got stuck again, and scient...
The Mars rover Opportunity will descend into Victoria crater despite the very real risk that it might not be able to get back out of it again. Rolling down into the crater should allow scientists to investigate progressively older rock strata, an opportunity :) whose benefits far outweigh the risks...
