The Mars Rover was both a success, and a failure. A few months back it got trapped in a sand pit, and has been stuck ever since. It is still broadcasting a signal as it’s power source is a solar panel on it’s head (Kind of like WALL-E).
Mars’ winters get down well below -100º Fahrenheit. This is too cold for the Spirit considering it isn’t getting enough power for it’s heaters to power on.
