From time to time, we all need to take a little break. After nearly 10 months of homework, pop quizzes and waking up early, summer vacation usually can’t come soon enough for students. Your parents probably get a day off from work every now and then too. Did you know that even Mars rovers need

Dear Friends of Janet’s Planet: Mars Rover Gets Mind of Its Own By SPACE.com Staff March 2010 NASA’s Mars rover Opportunity is getting a chance to call its own science shots on the red planet.