Another nice offering from Google, with their logo artwork to celebrate the Birthday of Italian astronomer Giovanni Schiaparelli, who drew maps from his observations of Mars in the late 19th Century:

You can do your own exploring of Mars with the help of Google Labs or watch a video made with Terragen 2 (landscape creating software) and terrain data from Nasa:

httpv://www.youtube.com/watch?v=xSTEo5QK9vk