Copernicus' theory did not seriously threaten Catholic dogma until later in the century when Italian astronomer Galileo Galilei published a concurring treatise. Galileo was not only a putative adherent of the Roman Christian church, but he resided in its backyard. Something had to be done to prevent serious erosion of faith in the doctrine of Dualism, and the Church's embarrassing excommunication of Galileo stood until the last decade of the Twentieth Century. ...

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• Approx Pages: 8
• Grade Level: Undergraduate