(First edition) Tuebingen, Germany: (translation – The Cosmographic Mystery) – first published in defense of the Copernican system.
Johannes Kepler (1571–1630 CE) was a German mathematician, astronomer and astrologer, and key figure in the seventeenth century Scientific Revolution. Best known for his laws on planetary motion, his works also laid the groundwork for Isaac Newton’s theory of universal gravitation (c. 1687).