I hate conspiracy theorists. If it is solar powered how could it run at night? They may be to illuminate areas in shadow behind rock. Also, did it land in a completely flat plain? If it is hill there may be places that are fairly dark. As a biologist, I would totally volunteer for a one way trip to a new planet if life was found, on Jupiter's frozen moon, Europa. I'd go under the ice in a vessel to see what life is there, and I am convinced that there has to be!