Galileo Galilei was an Italian astronomer, physicist and engineer born in 1564 in Pisa, Italy. He made many important scientific discoveries through his use of the telescope, including observing mountains and craters on the moon, the phases of Venus, and the four largest moons of Jupiter. Galileo also supported Copernicus' theory that the Earth and planets revolve around the sun, which brought him into conflict with the Catholic Church and led to his imprisonment. Galileo made many contributions to the scientific revolution through his innovative use of the telescope and his willingness to challenge established scientific beliefs of the time.

1. Galileo Galilei “Galileo, perhaps more than any other single person, was responsible for the birth of modern science.” -Stephen Hawking Ariel Myers, Kristie Powers, Savanah Plancon

2. Galileo’s Life.. -Galileo Galilei was born in Pisa, Italy on February 15, 1564 -Oldest of seven children -His father wanted his son to study medicine because there was more money in medicine. -At age eleven, Galileo was sent off to study in a Jesuit monastery.

3. Education -After four years, Galileo told his father that he wanted to be a monk. -This was not exactly what father had in mind, so Galileo withdrew from the monastery. -In 1581, at the age of 17, he gave into his father’s wishes entered the University of Pisa to study medicine, as his father wished. -By 1585 he gave up his courses in medicine and left without completing a degree to become a mathematics teacher.

4. His love for math. -Galileo began teaching math privately in Florence -Public appointments -Books and sharing his thoughts.

5. Galileo's Observations -Galileo was one among the first scientists who questioned the ancient ideas and disproved them. -The discovery of isochronism -Two objects with different weights fall down at the same speed

6. Galileo’s Inventions -Reasons for Inventing -1593: Thermometer -1597: Compass -1609: Telescope -1641: Pendulum Clock

7. Astronomy -Galileo invented a telescope that had 3x the magnification then Hans Lippersney Invented in 1608. -With this telescope he could see magnified, upright images of earth. -First to report lunar mountains and craters, made the conclusion that the moon is rough and uneven just like Earth. -Also observed Venus, Milky way, and Saturn.

8. Nothing New….? -Showing Planets were disks, not points of light -The great “cloud” the Milky way was composed of enormous numbers of starts that had not been shown before. -Planet Saturn had “ears” the rings of Saturn but his telescope wasn’t good enough to show them as more than extensions on either side of the planet. -Showing moon was not smooth.

9. Church Controversy -It is commonly believed that the Catholic Church persecuted Galileo for abandoning the geocentric (earth-at-the-center) view of the solar system for the heliocentric (sun-at-the-center) view. -He was sentenced to imprisonment, but that was later condemned to house arrest. -During this period, personal interpretation was a sensitive subject. In the early 1600s, the Church had just been through the Reformation experience, and one of the chief quarrels with Protestants was over individual interpretation of the Bible.

10. Galileo: The Challenge Of Reason

11. February 15, 1564 - January 8, 1642 Galileo Galilei