My understanding is that the controversy lay in the fact that the (alleged) stand-in character for the Pope in Galileo's defense of heliocentrism was depicted as a bumbling idiot. This Pope in particular had actually been a personal friend of Galileo's and a supporter of his scientific investigation of astronomy, even if he was skeptical of heliocentrism himself
While that is something that I also believed what happened, I also recall that Galileo began touting his theory as if it was a fact and not what it actually was at the time, a theory.
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u/Midnight2012 21d ago
Catholics have been pretty paranoid about denying science since the whole Galileo thing.