As of December 2011, there are at least two of them on the surface,
and another one is on the way.
The US built the Mars Rover
The mars rover was invented at Nasa.
Curiosity rover
The Mars Rover was created in the early 2000's and made its first trip to Mars in 2003. The Mars Rover is just one of NASA's many projects to explore Mars.
The rovers were lowered on the planet mars , with the help of a parachute.
there is only one mars rover and NASA invented the mars rover.
The US built the Mars Rover
The Mars Rover was not discovered it was invented.
The mars rover was invented at Nasa.
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.
mars rover
by rockets
On Mars...
mars