Technology development makes missions possible each mars mission is part of a continuing chain of innovation each relies on past missions for proven. One of two rovers launched in 2003 to explore mars and search for signs of past life, spirit far outlasted her planned 90-day mission among her myriad.
A rover (or sometimes planetary rover) is a space exploration vehicle designed to move across the surface of a planet or other celestial body some rovers have.
Batteries and other components that are not designed to survive cold martian nights reside in the warm electronics box nighttime temperatures may fall as low .
The mars exploration rovers act as robot geologists while they are on the you can explore the various parts of the rover by clicking on the image to the left.