Astronomical Lore in Chaucer

"Astronomical Lore in Chaucer" by Florence M. Grimm is a study that shows how much Geoffrey Chaucer's poetry uses ideas about the stars and planets. It explains that in the Middle Ages, people thought the sky had a big effect on their lives. The book starts by talking about how important astronomy was back then, and how Chaucer used it in his poems. It also talks about how people believed the Earth was the center of the universe, and that this idea affected their science, religion, and how they thought about right and wrong. The book points out that people used the stars to plan their days, and they believed that the planets could control what happened to them, ideas that help us understand when Chaucer mentions astrology in his writings.