Johannes Kepler (/ ˈ k ɛ p l ər /; [2] German: [joˈhanəs ˈkɛplɐ,-nɛs-] ⓘ; [3] [4] 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. [5] More @Wikipedia
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