Cool Mars stuff
If you haven't seen it already check out the picture of the blue Martian sunset; it's pretty nifty. More significantly, though, check out the evidence of water on Mars!

Scientists have concluded the part of Mars that NASA's Opportunity rover is exploring was soaking wet in the past.

Evidence the rover found in a rock outcrop led scientists to the conclusion. Clues from the rocks' composition, such as the presence of sulfates, and the rocks' physical appearance, such as niches where crystals grew, helped make the case for a watery history.

Mars Exploration Rover Mission: Press Releases