Catching up with 2-for-1: In honor of the upcoming Mars opposition (closest approach between Earth and Mars in 60,000 years), here's the most recent Mars Global Surveyor shot at SpaceRef: "The Marte Vallis system, located east of Cerberus and west of Amazonis Planitia, is known for its array of broken, platy flow features. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a close-up view of some of these plates; they appear to be like puzzle pieces that have been broken apart and moved away from each other. The Mars science community has been discussing these features for...