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  • Mars Orbital Period: How Long is a Martian Year?
    The planet that takes one year longer than Earth to orbit the sun is Mars.

    Here's why:

    * Earth's orbital period: 365.25 days (approximately one year)

    * Mars's orbital period: 687 days (approximately 687 days or 1.88 Earth years)

    Therefore, Mars takes about 322 days longer than Earth to complete one orbit around the sun.

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