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, Michelangelo or Michelagnoloalso became a noted lutenist and composer although he contributed to financial burdens during Galileo's young adulthood. Michelangelo was unable to contribute his fair share of their father's promised dowries to their brothers-in-law, who would later attempt to seek legal remedies for payments due.
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.
Michelangelo would also occasionally have to borrow funds from Galileo to support his musical endeavours and excursions. When Galileo Galilei was eight, his family moved to Florencebut he was left with Jacopo Borghini for two years. The Italian male given name "Galileo" and thence the surname "Galilei" derives from the Latin "Galilaeus", meaning "of Galilee ", a biblically significant region in Northern Israel.
In it he made a point of quoting Acts 1: She is buried with him in his tomb in the Basilica of Santa Croce, Florence.
Despite being a genuinely pious Roman Catholic,  Galileo fathered three children out of wedlock with Marina Gamba. They had two daughters, Virginia born in and Livia born inand a son, Vincenzo born in Both girls were accepted by the convent of San Matteo in Arcetri and remained there for the rest of their lives.
Livia took the name Sister Arcangela and was ill for most of her life. Vincenzo was later legitimised as the legal heir of Galileo and married Sestilia Bocchineri. To him, it seemed, by comparison with his heartbeat, that the chandelier took the same amount of time to swing back and forth, no matter how far it was swinging.
When he returned home, he set up two pendulums of equal length and swung one with a large sweep and the other with a small sweep and found that they kept time together. It was not until the work of Christiaan Huygensalmost one hundred years later, that the tautochrone nature of a swinging pendulum was used to create an accurate timepiece.
However, after accidentally attending a lecture on geometry, he talked his reluctant father into letting him study mathematics and natural philosophy instead of medicine. Galileo also studied disegno, a term encompassing fine art, and, inobtained the position of instructor in the Accademia delle Arti del Disegno in Florence, teaching perspective and chiaroscuro.
Being inspired by the artistic tradition of the city and the works of the Renaissance artists, Galileo acquired an aesthetic mentality. Inhis father died, and he was entrusted with the care of his younger brother Michelagnolo. Inhe moved to the University of Padua where he taught geometry, mechanicsand astronomy until His multiple interests included the study of astrologywhich at the time was a discipline tied to the studies of mathematics and astronomy.
Portrait by Leoni Cardinal Bellarmine had written in that the Copernican system could not be defended without "a true physical demonstration that the sun does not circle the earth but the earth circles the sun". He circulated his first account of the tides inaddressed to Cardinal Orsini.
As a general account of the cause of tides, however, his theory was a failure. If this theory were correct, there would be only one high tide per day.
Galileo and his contemporaries were aware of this inadequacy because there are two daily high tides at Venice instead of one, about twelve hours apart.
Galileo dismissed this anomaly as the result of several secondary causes including the shape of the sea, its depth, and other factors. It began as a dispute over the nature of comets, but by the time Galileo had published The Assayer Il Saggiatore inhis last salvo in the dispute, it had become a much wider controversy over the very nature of science itself.
Grassi concluded that the comet was a fiery body which had moved along a segment of a great circle at a constant distance from the earth,  and since it moved in the sky more slowly than the moon, it must be farther away than the moon.
Scientific opposition came from Tycho Brahe and others and arose from the fact that, if heliocentrism were true, an annual stellar parallax should be observed, though none was. Copernicus and Aristarchus had correctly postulated that parallax was negligible because the stars were so distant.
However, Brahe had countered that, since stars appeared to have measurable size, if the stars were that distant, they would be gigantic, and in fact far larger than the Sun or any other celestial body. According to Maurice Finocchiaro, this was done in a friendly and gracious manner, out of curiosity.
Prompted by this incident, Galileo wrote a letter to Castelli in which he argued that heliocentrism was actually not contrary to biblical texts, and that the bible was an authority on faith and morals, not on science.
This letter was not published, but circulated widely. At the start ofMonsignor Francesco Ingoli initiated a debate with Galileo, sending him an essay disputing the Copernican system.
Galileo later stated that he believed this essay to have been instrumental in the action against Copernicanism that followed. Ingoli wrote that the great distance to the stars in the heliocentric theory "clearly proves Barberini was a friend and admirer of Galileo, and had opposed the condemnation of Galileo in Galileo Galilei Biography.
Galileo Galilei () – Italian astronomer, scientist and philosopher, who played a leading role in the Scientific Revolution. Galileo improved the telescope and made many significant discoveries in astronomy.
His findings encouraged him to speak out for the Copernican view that the earth revolved around the sun. Galileo Galilei was born in Pisa in , the first of six children of Vincenzo Galilei, a musician and scholar.
In he entered the University of Pisa .
Galilei, an Italian Scientist, was the man who discovered and created many theories that shaped the modern sciences. was born in Pisa, Italy on February 15, to Vincenzio Galilei and was the first child in his family.
Watch video · Galileo Biography Astronomer, Scientist (–) Italian scientist and scholar Galileo made pioneering observations that laid the foundation for modern physics and astronomy.
Galileo Galilei Biography Galileo Galilei () – Italian astronomer, scientist and philosopher, who played a leading role in the Scientific Revolution. Galileo improved the telescope and made many significant discoveries in astronomy.
An Italian Scientist built on the new theories about astronomy. He built his own telescope and used it to study the heavens in A great English scientist that discovered that the same force ruled motion of the planets and all matter on earth and in space.
(The law of universal gravitation) One of Galileo's students developed the.