Rover

Spirit Mars Rover in 'McMurdo' Panorama
This 360-degree view, called the "McMurdo" panorama, comes from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit.

Spirit and Opportunity:
Twin Mars Exploration Rovers

The Mars Exploration Rovers act as robot geologists while they are on the surface of Mars.

Mars Exploration Rover

Spirit and Opportunity: Rover Parts

The rover has a:

a body:a structure that protects the rovers' "vital organs"
brains:computers to process information
temperature controls:internal heaters, a layer of insulation, and more
a "neck and head":a mast for the cameras to give the rovers a human-scale view
eyes and other "senses":cameras and instruments that give the rovers information about their environment
arm:a way to extend its reach
wheels and "legs":parts for mobility
energy:batteries and solar panels
communications:antennas for "speaking" and "listening"