Age of Revolution
How He Started
In 1581 Galileo was sent to the University of Pisa to study medicine. While he was a student at the university he discovered that he had a talent for mathematics. He was able to convince his father to let him leave the university to become a tutor in mathematics. Then later he became a professor of mathematics.
Important Things Discovered While Using Telescope
Later the same year of the invention of the telescope, He became the first person to look at the moon through a telescope and it was his first astronomy discovery. He found out that the moon was not smooth but it was mountainous and pitted just like Earth. He also used the telescope to discover the four moons circling jupiter. he used it to study Saturn, to observe the phases of Venus, and also to study sunspots on the Sun.
What Galileo Believed in
The Catholic Church which was very powerful and influential in Galileo's day strongly supported the theory of a geocentric, or Earth-centered, universe. After Galileo began publishing papers about his astronomy discoveries and his belief in a heliocentric or Sun-centered Universe he was called to Rome to answer charges brought against him by the Inquisition (the legal body of the Catholic Church).
What the Church Thought About Galileo's Idea
Early in 1616 Galileo was accused of being a heretic or a person who opposed Church teachings. Heresy was a crime which people were sometimes sentenced to death. Galileo was cleared of his charges of heresy but was told that he should no longer publicly state his belief that Earth moved around the Sun.