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    • Diagram of Kepler’s 1st, 2nd and 3rd laws of planetary motion.
    Rights: University of Waikato. All Rights Reserved. Published 27 March 2013 Size: 48 KB Referencing Hub media

    Kepler realised the orbits of the planets could be elliptical rather than circular. Using Brahe’s data on the movement of Mars, Kepler developed his laws of planetary motion.

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