As reported by The Independent, the Mars rover called Opportunity is still up and running (unlike its companion rover, Spirit, which stopped sending signals last year). And there is still a lot to explore, including a huge crater at which Opportunity has just arrived. This is an incredible story and a laudable accomplishment for the many scientists who have worked behind the scenes. At least, it's a laudable story for those of us who still appreciate first-rate science. This inspiring story of the Mars rovers makes it all the more frustrating that every year the U.S. spends as much money air conditional soldiers' tents in Iraq and Afghanistan ($20 B), as it spends every year for the entire budget of NASA.