Galileo Galilei

T J Osler

Galileo Galilei (15 February 1564 – 8 January 1642

•  Galileo Galileo was born in Pisa, in the Tuscany region of Italy, on February 15, 1564,

• In 1609, Italian Scientist Galileo Galilei heard about the invention of a spyglass. He made one for himself and turned it on the heavens.

Replica of Galileo’s Telescope

It was on this page that Galileo first noted an observation of the moons of Jupiter.

Phases of Venus

• 1610 - To the moons of Jupiter, Galileo gave the name Sidera Medicea ("Medicean stars") in honor ofCosimo de Medici, the Grand Duke of Tuscany, whom Galileo served as "first philosopher and mathematician" after leaving the University of Pisa in 1610

• 1611 - The Starry Messenger was a sensational success, and Galileo became well known throughout Europe. In 1611, Galileo traveled to Rome, where the Collegio Romano, at the behest of Robert Bellarmino, confirmed Galileo's findings

Period of a pendulum is independent of its amplitudeDome of the cathedral of Pisa with the "lamp of Galileo"

In 1633, Galileo was convicted of "grave suspicion of heresy" based on the book, which was then placed on the Index of Forbidden Books, from which it

was not removed until 1835 

1633 Trial of Galileo

 Galileo's trial began on April 12, 1633. Over the next two

months, Galileo would be called before the Inquisition on three separate occasions.

Galileo was convicted and sentenced to house arrest

 Galileo died at Arcetri, near Florence, on January 8, 1642. In that same year Newton was born and would carry forward the torch of

knowledge by uniting Kepler's Planetary Laws with Galileo's

mathematical physics to perfect the Law of Universal Gravitation,