because it is my butt
The Mars Rovers "Opportunity" and "Spirit" have six wheels each with there own motor. The Mars Rovers also have a top speed of 50 mm/s (2 in/s) and an average speed of 10 mm/s.
there is only one mars rover and NASA invented the mars rover.
All of the versions of the Mars rovers that the United States has produced and used have had wheels. However, the US had prototypes of ones with continuous tracks, or tank tracks. China and Russia have also explored the moon and Mars with similar type apparatuses.
The US built the Mars Rover
The Mars Rover was not discovered it was invented.
The mars rover was invented at Nasa.
On wheels, driven by electrical motors. It moves very slowly, transmitting pictures and data to an orbiting relay station and then to Earth; controllers on Earth review the data, and transmit new commands to the Mars rovers. Think of it as the solar system's slowest radio-controlled toy car.
the mars rover Spirit found water or ice on Mars
Yes, the Mars Rover has cameras to examine the land on Mars.
NASA made the mars rover probably because they want to learn about Mars.
No they are different rovers.