This man wrote his thoughts about religion in his 
This man wrote his thoughts about religion in his Letter to the Grand Duchess Christina. He gave a lodestone to Christina's son at his wedding, comparing it to the son's magnetic power, and he later served as that man's court philosopher. This man published a debate with Orazio Grassi, The Assayer, which he dedicated to his friend Maffeo Barberini. This man offended Pope Urban VIII by satirizing him as Simplicio, a character from his work Dialogue Concerning the Two Chief World Systems. This man discovered the "Medicean stars," his name for the moons of Jupiter, which he used to defend his most notable theory. For 10 points, identify this Italian scientist put on trial for vehement suspicion of heresy for defending heliocentrism.
This man wrote his thoughts about religion in his Letter to the Grand Duchess Christina.
{Galileo Galilei}