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  • Diagram showing Earth's Eccentricity zero orbit
    Rights: National Aeronautics and Space Administration (NASA)Robert Simmon Published 21 June 2007 Size: 31 KB Referencing Hub media

    Eccentricity refers to whether the Earth’s orbit is more or less circular – it changes between the two over a period of 100,000 years. This shows eccentricity zero.

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