character: NASA Rover Curiosity
topic: The role of rovers in exploring the surface of Mars.
grade: 4
subject: Science
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character: Mars Rover Opportunity
topic: How the Opportunity rover contributed to our understanding of Martian geology.
grade: 4
subject: Science
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character: Lunar Rover Yutu
topic: The role of the Chinese Yutu rover in lunar exploration.
grade: 4
subject: Science
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character: Mars Rover Spirit
topic: The discoveries made by the Spirit rover during its mission on Mars.
grade: 4
subject: Science
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