Don't forget, we're also occupying an alien world right now, too.

In case anyone's forgotten, the Mars rovers named Spirit and Opportunity are still fully functional wandering around the terrain on that red planet. Two years and counting, they were expected to work for just a few months. I wonder if the Martians are having as much trouble as Lindsay Lohan avoiding being photographed?

The images I think I like best are the sunset images at Gusev. The blue sunset in the sandy, salmon sky takes my breat away. They remind me that we're on an alien world. On Earth, sunsest can be orange and red in a blue sky. But on Mars,it's the other way around. And thats just cool.
--Dr. Albert Haldemann, Deputy Project Scientist