explore terrain and look for water
NASA did
The rover was built by the NASA Telerobotics Program. The mission was controlled by the NASA Jet Propulsion Laboratory (JPL).
there is only one mars rover and NASA invented the mars rover.
The mars rover was invented at Nasa.
by nasa
The US built the Mars Rover
NASA made the mars rover probably because they want to learn about Mars.
Yes, NASA owns all the successful Mars rovers.
NASA
The first martian rover was the Sojoner rover by NASA (US)
You can see pictures of the rover on the official NASA website. It has various picture galleries. The NASA website also offers status updates and press releases about the Mars 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.