Mars and its stunt double

[Images: A "faux Mars" being air-brushed and constructed in a lab in southern California "to simulate the environment" on the red planet. Contrast that with a photo taken by Spirit, the robotic Ansel Adams of Mars, showing "Larry's Lookout, a pit stop along the robot's uphill trail as it explores the red planet." Pop quiz for conspiracy theorists: is Spirit really on another planet...?].