Also, in addition to what u/lapalapa said, in Galileo's book, he had the geocentric view be espoused by a character that was a blatant physical caricature of the Pope (who had been a patron of Galileo's) named Simplicio... "simpleton". When you write a book without much factual backing, after being warned not to do so, and you make the strawman of the other side look like the most powerful man in the world and name the character Idiot... well, you're gonna have problems.