According to the Encarta World English Dictionary: "Rover" = Wanderer, somebody who wanders from place to place, never settling anywhere for long.
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ROVER stands for "Remote Operated Vehicle for Exploration and Research." These vehicles are designed to move across the surface of a planet or moon to gather data and samples, without the need for direct human control.
The Mars rover was built by the United States of America.
No, the Mars rover and the Mars Pathfinder rover are not the same thing. The Mars Pathfinder rover, named Sojourner, landed on Mars in 1997 and was the first rover to explore the Martian surface. The Mars rover refers to a series of rovers sent to Mars by NASA, including the Spirit, Opportunity, Curiosity, and Perseverance rovers.
Curiosity rover
The first rover, called Lunokhod 1, was invented by the Soviet Union and launched to the moon in 1970. NASA's Mars rover program began in the 1990s with the Mars Pathfinder mission.
Some robots that have explored Mars include Spirit and Opportunity rovers, Curiosity rover, and Perseverance rover.