Astronomer Johannes Kepler was an important and admired figure in the scientific revolution of the early 17th century. But when his widowed mother was accused of witchcraft, the scientist remarkably defended her, in a trial that lasted six years.

In this episode of Not Just the Tudors, Professor Suzannah Lipscomb talks to author Ulinka Rublack who has pieced together this extraordinary true story.

This episode was edited by Ella Blaxill and produced by Rob Weinberg.

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