The "third Law"
Kepler discovered his "third law" a decade after the publication of the Astronomia nova as a result of his investigations in the 1619 Harmonices Mundi (Harmonies of the world). He found that the ratio of the length of the semi-major axis of each planet's orbit (cubed), to the time of its orbital period (squared), is the same for all planets.
Read more about this topic: Astronomia Nova
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“America has always been a country of amateurs where the professional, that is to say, the man who claims authority as a member of an élite which knows the law in some field or other, is an object of distrust and resentment.”
—W.H. (Wystan Hugh)
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