This letter was not published, but circulated widely. The Assayer was Galileo's devastating reply to the Astronomical Balance. Tycho Brahe to Newton. Although Galileo seriously considered the priesthood as a young man, at his father's urging he instead enrolled in at the University of Pisa for a medical degree. He was energetic on this point and regretted that in the case of Galileo. This page was last edited on 21 Decemberat In the whole world prior to Galileo's conflict with the Church, the majority of educated people subscribed either to the Aristotelian geocentric view that the earth was the center of the universe and that all heavenly bodies revolved around the Earth,  or the Tychonic system that blended geocentrism with heliocentrism.
Critical Reasoning in the Two Affairs.
It was, however, also possible to place it entirely on the far side of the Sun, where it could exhibit only gibbous and full phases. Prior to Galileo's construction of his version of a telescope, Thomas Harriotan English mathematician and explorer, had already used what he dubbed a "perspective tube" to observe the moon. Religious opposition to heliocentrism arose from Biblical references such as Psalm Archived from the original on 13 July Galileo had alienated one of his biggest and most powerful supporters, the Pope, and was called to Rome to defend his writings  in September Finocchiaro's translation of the Inquisition's judgement against Galileo is "available on-line". Galileo Galilei at Wikipedia's sister projects.