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2. Galileo GalileiGalileo Galilei
(Feb. 15, 1564- Jan. 8, (Feb. 15, 1564- Jan. 8,
1642)1642)
“The F“The Father of ather of
Modern Modern
Observational Observational
AstronomyAstronomy “ “

3. Early LifeEarly Life

Oldest of seven children.Oldest of seven children.

His father was a musician and wool trader.His father was a musician and wool trader.

Galileo’s father wanted him toGalileo’s father wanted him to study study
medicine because he said there was more medicine because he said there was more
money to be made.money to be made.

Sent to a Jesuit Monastery at age 11. Sent to a Jesuit Monastery at age 11.
Decided to become a monk which upset his Decided to become a monk which upset his
father.father.

Went to the University of Pisa at the age of Went to the University of Pisa at the age of
17 to study medicine.17 to study medicine.

4. http://users.etown.edu/r/riegerj/med
ia/Timeline.htm

5. Using his pulse while watching a Using his pulse while watching a
lamp swing in a cathedral, Galileo lamp swing in a cathedral, Galileo
developed the Law of Pendulum developed the Law of Pendulum
which was used to build clocks.which was used to build clocks.

6. 
Bored with college, he dropped out Bored with college, he dropped out
and was tutored to satisfy his thirst and was tutored to satisfy his thirst
for mathematics.for mathematics.

He was later offered a teaching He was later offered a teaching
position at the University and began position at the University and began
tutoring students and continuing his tutoring students and continuing his
experiments.experiments.

Galileo questioned the laws of nature Galileo questioned the laws of nature
accepted from Aristotle which stated accepted from Aristotle which stated
that larger objects would fall faster that larger objects would fall faster
than lighter ones. than lighter ones.

7. GalileoGalileo climbed to climbed to
the top of the Tower the top of the Tower
of Pisa to do his of Pisa to do his
experiments. He lost experiments. He lost
his teaching position his teaching position
when he became too when he became too
arrogant with his arrogant with his
findings.findings.

8. Early SpyglassEarly Spyglass
(Later renamed (Later renamed
the telescope)the telescope)

9. New Telescope DiscoversNew Telescope Discovers

Moon is an irregular, rough body, not Moon is an irregular, rough body, not
smooth as previously thought.smooth as previously thought.

Milky Way is composed of many stars.Milky Way is composed of many stars.

Jupiter has many small satellites he Jupiter has many small satellites he
called “Sidera Medicea” after his favorite called “Sidera Medicea” after his favorite
student.student.

Made observations about Saturn, Made observations about Saturn,
sunspots, and the phases of Venus.sunspots, and the phases of Venus.

10. Sunspots Observations Sunspots Observations
(1612)(1612)

12. In 1613, Galileo stated the earth In 1613, Galileo stated the earth
traveled around the sun, which traveled around the sun, which
contradicted the teachings of the contradicted the teachings of the
church. church.

13. On March 5, 1616, the Catholic On March 5, 1616, the Catholic
Church declares the writing of Church declares the writing of
Galileo banned. He retires to his Galileo banned. He retires to his
home near Florence, Italy. He home near Florence, Italy. He
continues his writings and continues his writings and
observations.observations.

14. 1632-16331632-1633
The Pope begins to find fault The Pope begins to find fault
in all of Galileo’s writings in all of Galileo’s writings
and in February, 1633, and in February, 1633,
Galileo is charged with Galileo is charged with
“vehement suspicion of “vehement suspicion of
heresy” and tried. He is heresy” and tried. He is
placed under house arrest placed under house arrest
until his death eight years until his death eight years
later.later.

15. The church finally lifted the ban The church finally lifted the ban
on Galileo’s writing in 1822, on Galileo’s writing in 1822,
accepting that the Sun, not the accepting that the Sun, not the
earth, was the center of the earth, was the center of the
known Universe.known Universe.

16. Finally, in 1992, three Finally, in 1992, three
years after Galileo’s years after Galileo’s
namesake had been namesake had been
launched on its way launched on its way
to Jupiter, the to Jupiter, the
Vatican formally and Vatican formally and
publicly cleared publicly cleared
Galileo of any Galileo of any
wrongdoing.wrongdoing.