Answer:
never say anything against the Catholic Church ever again.
Explanation:
Galileo Galilei was an Italian astronomer who built the first telescope and discovered the moons of Jupiter. In the fifteenth and sixteenth centuries, the catholic church punished scientists because they did not want people questioning its teachings. Since Galilei was the first person to say the Earth rotates around the sun, he was placed on trial. In fact, the catholic church was going to kill him, so he was forced to confess to heresy and promised not to say anything against the Catholic Church again. Finally, he was sentenced to house arrest.