Galileo Galilei was the oldest of six children and learnt all about music from his father. He also was educated at the Jesuit Monastery. Galileo Galilei later studied medicine at the University of Pisa.
Galileo Galilei was supposed to study medicine and become a doctor because it was high paying. But one day, he accidently entered a lecture about geometry and was mighty interested in math and the science behind it. Galileo Galilei begged his father to let him pursue mathematics, therefore, his nice father lets him study math instead.
Galileo Galilei was the first scientist to combine experiments, theories, and math to the science of motion. Many people think that he thought of combining all these things together because of his knowledge of music, and the theories of music.
Galileo Galilei made many discoveries I math. One day, he saw a swinging chandelier, and when observing it, he later studied pendulums, which lead to the pendulum clock as we know it today. He, later on, saw a telescope built by an eyeglass maker and went on a quest to make his own.
Sailors wanted to have telescopes, so as to see land. Therefore, Galileo Galilei made some for them and added a few improvements on the way. Galileo Galilei later used telescopes for studying the solar system. When studying the solar system, Galileo Galilei found that four things which he thought as stars, circling Jupiter, which was thought false, and he say the moon was a sphere, and that the milky way was not gases, but many individual stars. Galileo Galilei agreed with Copernicus and promoted Heliocentric models (everything circles around the sun).
The Church saw his writings as a violation of the Council of Trent and called Galileo Galilei to repent of his decisions. Galileo Galilei said that his findings did not contradict the scriptural proofs, and he was later put under house arrest for his life, his writings and teachings banned and was put as a heretic.
Galileo Galilei died at age 77 in 1642. He was remembered as the greatest scientist of all time, and his work paved the way for astronomy and many other subjects of science.