Galileo Galilei

Galileo Galilei's parents were Vincenzo Galilei and Guilia Ammannati.Galileo was their first child and spent his early years with his family in Pisa.In 1572, when Galileo was eight years old, his family returned to Florence, his father's home town.Galileo returned to Florence for the summer vacations and there continued to study mathematics.Galileo used parallax arguments to prove that the New Star could not be close to the Earth.We mentioned above an error in Galileo's theory of motion as he set it out in De Motu around 1590.However Galileo already knew that a body would fall in the observed manner on a rotating Earth.Other observations made by Galileo included the observation of sunspots.Although Galileo put forward many revolutionary correct theories, he was not correct in all cases.Castelli had been a student of Galileo's and he was also a supporter of Copernicus.