The gradual acceptance of the Copernican theory of the universeNote 10 — Chapter I · The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.Reading editionDiogenes: Op. cit., Lib. VIII, c. 7 (225).◇Copy noteReturn to CHAPTER I. The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.