Galileo Galilei was an Italian astronomer, physicist, philosopher, and mathematician during the 16th and 17th century. He effectively disproved geo-centrism which was a popular belief of the Catholic Church and therefore proposed a theoretical idea created by Copernicus of helio-centrism at the cost of his excommunication from the Catholic Church. His research was written down in a book named Dialogue. Galileo’s research explained that the idea of geo-centrism that was written about in the Bible explaining that the Sun moved around the Earth was invalid. Instead Dialogue supported helio-centrism or the thought that the Earth moved around the sun. Galileo contradicted the church and in doing so contradicted popular belief. This heretical view
