Quoc: 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 been designed to transport members of a human spaceflight crew; others have been partially or fully autonomous robots. Rovers usually arrive at the planetary surface on a lander-style spacecraft. Rovers are created to land on another planet, besides Earth, to find out information and to take samples. They can collect dust, rocks, and even take pictures. They are very useful for exploring the universe.

A wheeled robot used for exploring the surface of a celestial body is called?
HW Chung: OK, some thoughts:
The relevant sentence in the passage is: A rover (or sometimes planetary rover) is a space exploration vehicle designed to move across the surface of a planet or other celestial body. The answer is A rover ( or sometimes planetary rover ).