Galileo had to turn himself in to a holy officer as ordered by the catholic church because of his belief that earth revolves around the sun. This was considered heretical by the church.
Step-by-step explanation:
Galileo had to end his beliefs and researches because of the order given to him by the catholic church. According to this order, he had to turn himself to holy office.
He had a belief that the Earth revolves around the sun and for this he held trials also. But this was considered as heretical by the church, so he had to turn himself to holy office because he was convicted of heresy.