Let's Find Out about Mars
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A simple discussion of the planet, covering its position in the solar system, the canal theory, and the findings of Mariner 4.
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A simple discussion of the planet, covering its position in the solar system, the canal theory, and the findings of Mariner 4.
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"A simple discussion of the planet, covering its position in the solar system, the canal theory, and the findings of Mariner 4."
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