It explores the surface of mars and it is a robot like feature. It shows the surface of mars and the NASA people can see what is happening on mars. They're seeing if there are traces of water too.
Viking I
The first martian rover was the Sojoner rover by NASA (US)
there is only one mars rover and NASA invented the mars rover.
NASA's twin robot geologists, the Mars Exploration Rovers, launched toward Mars on June 10 and July 7, 2003, to find answers to the questions about water on Mars. They landed on Mars January 3 and January 24 PST, 2004.
Nasa was responsible for retrieving the robots from mars.
NASA has sent a total of 5 space crafts to mars.
NASA
Curiosity
An unusual object recently found on Mars by a NASA robot - said to be "the size of a large watermelon"
curiosity.
NASA has sent a number of space craft to Mars, including a surveyor and several rovers. More missions are planned.
Yes, NASA has sent two robots to Mars. was one called the Spirit?
No humans have yet gone to Mars. We have sent robot probes to the planet.
mariner 7
NASA (National Aeronautics and Space Administration)
It explores the surface of mars and it is a robot like feature. It shows the surface of mars and the NASA people can see what is happening on mars. They're seeing if there are traces of water too.