Postcards from Mars MSNBC

NASA’s Opportunity rover is still struggling to break free from a Martian sand dune, and half a world away, the Spirit rover is delving deeply into the geology of Gusev Crater. As a result, the Mars mission teams seem to be in a head-down, nose-to-the-grindstone mode. Nevertheless, NASA is releasing Red Planet imagery that ranks high on the coolness scale.