The protest of Giordano Bruno against the cosmic model made everybody against him in the city. In the 16th century it was one of the prominent rule of the city or the whole world to not to go against the church and the astounding and old text of the Holy Bible. So when every time Bruno used to tell his story of the real cosmic model, he was always opposed by everyone and even jailed for a long time. But he didn’t quit about his story to more and more people and was finally fired in between the public. It was actually a cruel punishment given to anyone who attempt to go against the Holy Bible. 
However when the Galileo observed the space from his own made, he found something which was told by Giordano Bruno many year earlier than him