Looks like the world is not enough! Or rather, the Earth is not enough. Google has come up with Google Mars!
ZDNet has a brief review of the new service.
Using this service, you can browse the martian landscape the same way as using Google Maps. Google has included three different types of data in Google Mars: [Elevation, Visible, and Infrared].
And what, may I ask, would be the practical uses of this new service? (I hear things are getting too crowded here that they’re planning to move their datacenters to Mars.)