The Comet That Broke the Crystal Spheres
In November 1577 a comet appeared over Europe so bright it cast shadows. A twenty-eight-year-old Dane measured its distance and demolished Aristotle's heavens.
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Katharina Kepler
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The Astronomer Who Defended His Mother From the Stake
In 1620 the seventy-four-year-old mother of Johannes Kepler was arrested for witchcraft. He spent six years getting her out.
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