Google Goes to Mars
Having already been to the the moon, Google goes to Mars and takes us there with Google Mars.
Besides looking at the pretty pictures via the elevation map, you can check out the "visible" and "infrared" views, as well as the mountains, ridges, plains and craters of the red planet, as tagged by Google. And clicking on the stories link will lead you to some background information on various sites, like the Bacolor Crater.
Via Warping it up!