by guest contributor Nicholas Bellinson

One Bohemian night in 1608, the Imperial Mathematician gazed up at the moon and the stars. In the seven years since he had received that title, Johannes Kepler had discovered many things about these celestial bodies, some true and some (as Hesiod said) like the truth: that planets moved around the sun, not the earth; that they moved in ellipses, not perfect circles; that they were enormous magnets – to name a few. The following year, he would publish these discoveries as his New Astronomy, a book which would make his name a fixed star in the firmament of science. On this particular night, however, a different book was on Kepler’s mind. His curiosity had been aroused by popular historical comparisons to the current troubles between Emperor Rudolph and his brother, the Archduke Matthias; while investigating Bohemian legends, Kepler had come across the story…

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