Galileo Galilei was born in Pisa (then part of the Duchy of Florence), Italy, on 15 February 1564, the first of six children of Vincenzo Galilei, a famous lutenist, composer, and music theorist, and Giulia (née Ammannati), who had married in 1562. Galileo became an accomplished lutenist himself and would have learned early from his father a scepticism for established authority, the value of well-measured or quantified experimentation, an appreciation for a periodic or musical measure of time or rhythm, as well as the results expected from a combination of mathematics and experiment. Three of Galileo's five siblings survived infancy. The youngest,
Italian submarine Galileo Galilei the crew to leave the ship, "Galileo Galilei" fired three torpedoes that set the ship on fire and sank the tanker. It is likely, the explosions were heard in Aden and the smoke column rising from the burning tanker was also observed, but no British ships or planes appeared and the submarine continued her mission unmolested until the afternoon of June 18 when a Yugoslavian steamer was spotted. "Galileo Galilei" fired a shot across the bow ordering the ship to stop, but after seeing the ship was under a neutral flag, the steamer was allowed to leave. However, the gunfire