Galileo Galilei was born on February 15, 1564, in Pisa, Duchy of Florence, Italy. Galileo’s mother was Giulia Ammannati. His father Vincenzo Galilei was an Italian lutenist, merchant, and composer. Galileo had five siblings: Virgina Galilei, Michelagnolo Galilei, Livia Galilei, Unknwon Galilei, and Benedetto Galilei. Galileo was talented in a wide variety of things so he was considered a renaissance man. He loved math and physics. He loved to invent things and draw. He would play the lute with his father. …show more content…
At the age of 17, he went to the University of Pisa to study medicine but then changed his major to mathematics and physics. Galileo was going to become a university professor but left before earning his degree in 1585 due to financial difficulties. At the age of 22, Galileo published a book about hydrostatic balance and created fame off of it. At 24, he began teaching art in Florence. At 25, he was awarded the Chair of Mathematics at the University of Pisa. Galileo is known for many things but best known for building his own telescope in 1609 and was the first person to study the sky with it. He also studied the cosmos and stars. He also used his telescope to discover that the Earth’s solar system is heliocentric and that the Milky Way is made up of stars, and Venus has phases like the moon. In 1610, he discovered that Jupiter had mountains and its own moons. He also proved that objects fall at the same speed regardless of mass by dropping two objects from the Leaning Tower of Pisa. This supported the basis of Newton’s second law of