Google 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.
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Erik:
World Wind has had this for a while, including 3d terrain.
http://www.alteviltech.com/blog/index.php?entry=entry060228-092738
March 13, 2006 at 11:18 AM