The gradual acceptance of the Copernican theory of the universeNote 30 — Chapter I · The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.Reading editionRashdall: II, pt. I, 77.◇Copy noteReturn to CHAPTER I. The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.