Kepler, JohannesPronunciation: /ˈkɛplə, ˈkɛplɐ/Definition of Kepler, Johannes (1571–1630), German astronomer. His analysis of Tycho Brahe’s planetary observations led him to discover the three laws governing orbital motion. Derivatives KeplerianPronunciation: /-ˈlɪərɪən/ adjective Kepler, Johannes in other Oxford dictionaries Definition of Kepler, Johannes in the US English dictionary
