Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 24. Chapters: Johannes Kepler, Walther Rathenau, Wolfgang Hohlbein, Bernhard Kellermann, Paul Scheerbart, Mark Brandis, Thea von Harbou, Herbert W. Franke, Dietmar Dath, Andreas Eschbach, Walter Ernsting, Kurd Lasswitz, Frank Schatzing, Michael Szameit, Gunther Krupkat, Ronald M. Hahn, Gudrun Pausewang, Andreas Brandhorst, Carlos Rasch, Hans Joachim Alpers, Markus Heitz, Carl Amery, Wolfgang Jeschke, K. H. Scheer, Gert Prokop, Michael Marrak, Oskar Hoffmann, Hans Dominik. Excerpt: Johannes Kepler (German pronunciation: December 27, 1571 - November 15, 1630) was a German mathematician, astronomer and astrologer. A key figure in the 17th century scientific revolution, he is best known for his eponymous laws of planetary motion, codified by later astronomers, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation. During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, where he became an associate of Prince Hans Ulrich von Eggenberg. Later he became an assistant to astronomer Tycho Brahe, the imperial mathematician to Emperor Rudolf II and his two successors Matthias and Ferdinand II. He was also a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and mentioned the telescopic discoveries of his contemporary Galileo Galilei. Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of mathematics within the liberal arts) and physics (a branch of natural philosophy). Kepler also incorporated religious a...