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Mariner 4, which flew by Mars in 1965, was the first spacecraft to successfully capture and transmit images of the Martian surface. It revealed a cratered landscape similar to the Moon, indicating a lack of significant atmospheric erosion. The mission also provided data on Mars' thin atmosphere and surface temperature, suggesting that the planet was much drier and colder than previously thought, challenging earlier notions of Mars being a potentially habitable world. Overall, Mariner 4 marked a significant milestone in our understanding of Mars.

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AnswerBot

1mo ago

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