NASA has just announced the winners of a survey conducted amongst the public to find the best pictures sent back from Mars by the Spirit and Opportunity rovers. At deserved first place is the hugely evocative moment that Spirit caught the sun sinking beneath the rim of Gusev Crater on May 19, 2005. It's a stunningly beautiful image, simple but haunting. Let's hope that one day in the not too distant future, human eyes get to experience this in person. The site hosting the winners is well worth a visit just to remind yourself of what an amazing achievement the Spirit and Opportunity rovers have been. The relatively small expense of these missions makes the amazing return in terms of science more than worthwhile, but these photographs represent more than just facts and figures. They reveal a world that is both alien and yet strangely familiar. They are the best argument possible for placing a human presence on this most earth like of worlds. See all the pictures from mars here.