Many photos of Earth taken from space have entered into legend; The Blue Marbles beautiful, glowing globe is one of the most recognizable images of all time, and Carl Sagans Pale Blue Dot put our planets place in the vastness of the universe into poignant perspective. Look closely and you can just make out the moon orbiting Earth — NASA says that both objects would be visible to the naked eye from Mars surface, appearing as evening stars. You can download high-resolution versions of the photo from NASAs website.