For insulting the Pope and everything else he was doing before.
Excerpt from
catholic.com/library/Galileo_Controversy.asp (have you read this yet?)
"Galileo came to Rome to see Pope Paul V (1605-1621). The pope, weary of controversy, turned the matter over to the Holy Office, which issued a condemnation of Galileo’s theory in 1616. Things returned to relative quiet for a time, until Galileo forced another showdown.
At Galileo’s request, Cardinal Robert Bellarmine, a Jesuit—one of the most important Catholic theologians of the day—issued a certificate that, although it forbade Galileo to hold or defend the heliocentric theory, did not prevent him from conjecturing it. When Galileo met with the new pope, Urban VIII, in 1623, he received permission from his longtime friend to write a work on heliocentrism, but the new pontiff cautioned him not to advocate the new position, only to present arguments for and against it. When Galileo wrote the Dialogue on the Two World Systems, he used an argument the pope had offered, and placed it in the mouth of his character Simplicio. Galileo, perhaps inadvertently, made fun of the pope, a result that could only have disastrous consequences. Urban felt mocked and could not believe how his friend could disgrace him publicly. Galileo had mocked the very person he needed as a benefactor. He also alienated his long-time supporters, the Jesuits, with attacks on one of their astronomers. The result was the infamous trial, which is still heralded as the final separation of science and religion.
In the end, Galileo recanted his heliocentric teachings, but it was not—as is commonly supposed—under torture nor after a harsh imprison- ment. Galileo was, in fact, treated surprisingly well.
As historian Giorgio de Santillana, who is not overly fond of the Catholic Church, noted, “We must, if anything, admire the cautiousness and legal scruples of the Roman authorities.” Galileo was offered every convenience possible to make his imprisonment in his home bearable.
Galileo’s friend Nicolini, Tuscan ambassador to the Vatican, sent regular reports to the court regarding affairs in Rome. Many of his letters dealt with the ongoing controversy surrounding Galileo.
Nicolini revealed the circumstances surrounding Galileo’s “imprisonment” when he reported to the Tuscan king: “The pope told me that he had shown Galileo a favor never accorded to another” (letter dated Feb. 13, 1633); " . . . he has a servant and every convenience" (letter, April 16); and “*n regard to the person of Galileo, he ought to be imprisoned for some time because he disobeyed the orders of 1616, but the pope says that after the publication of the sentence he will consider with me as to what can be done to afflict him as little as possible” (letter, June 18).
Had Galileo been tortured, Nicolini would have reported it to his king. While instruments of torture may have been present during Galileo’s recantation (this was the custom of the legal system in Europe at that time), they definitely were not used.
The records demonstrate that Galileo could not be tortured because of regulations laid down in The Directory for Inquisitors (Nicholas Eymeric, 1595). This was the official guide of the Holy Office, the Church office charged with dealing with such matters, and was followed to the letter.
As noted scientist and philosopher Alfred North Whitehead remarked, in an age that saw a large number of “witches” subjected to torture and execution by Protestants in New England, “the worst that happened to the men of science was that Galileo suffered an honorable detention and a mild reproof.” Even so, the Catholic Church today acknowledges that Galileo’s condemnation was wrong. The Vatican has even issued two stamps of Galileo as an expression of regret for his mistreatment. "*
Did you read the whole article. To summarize it. The church was ticked off that the truth about the earth revolving around the sun would confuse the ordinary catholic and shake his faith.
When does the truth shake ones faith?
Thats a major problem when an institution fights the truth because it might shake the faith.
And to use that as an excuse for wrong minded behaviour is even more wrong.
Jesus was all about truth, not hiding it.
Peace