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    Mars &amp; Earth Comparison

    Planet Mars: Click (or touch) and drag to interact with this 3D model of Planet Mars.

    Mars and Earth Comparison
    EARTH MARS
    Average Distance from Sun 93 million miles 142 million miles
    Average Speed in Orbiting Sun 18.5 miles per second 14.5 miles per second
    Diameter 7,926 miles 4,220 miles
    Tilt of Axis 23.5 degrees 25 degrees
    Length of Year 365.25 Days 687 Earth Days
    Length of Day 23 hours 56 minutes 24 hours 37 minutes
    Gravity 2.66 times that of Mars 0.375 that of Earth
    Temperature Average 57 degrees F Average -81 degrees F
    Atmosphere nitrogen, oxygen, argon, others mostly carbon dioxide, some water vapor
    Number of Moons 1 2
    Infographic of Mars quick Facts View and print the more detailed Mars Facts ›

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