I really enjoyed Ulinka Rublack's The Astronomer and the Witch. I teach about Johannes Kepler in my Astronomy classes and this book provided me with much more detail about his life and that of his mother, who was accused of being a witch. I'm glad to know the real story about Kepler and his family life. It's a good read.

FYI, the book isn't heavy on Kepler's astronomical discoveries, but really much more focuses on this trial, his family life, how it all fit in with his ideas and how people lived at that time.