Google Mars

Olympus Mons, Mars, elevation mapGoogle Mars: in the same vein as Google Moon (see previous entry); with visual-spectrum, infrared and elevation imagery. Here’s Google’s FAQ. Via Cartography, amongst many others. (Update: Announcement on the Google Blog.)

Also, as Stefan notes, a Mars layer is coming to Google Earth. Update: See also Frank’s post as well as this one about a user-developed Mars layer.