9781422272886
four rovers to Mars: the Sojourner, the Opportunity, the Spirit, and the Curiosity. Their mobility and sturdiness make these amazing machines an enormous asset to scientific research. Rovers confirmed the existence of ancient Martian surface water, which gave scientists a reason to speculate about the existence of ancient life on Mars.
Rover drones are mobile and can travel across various types of terrains, gathering information for research.
16
DRONES
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