Galileo Galilei was an Italian astronomer born in 1564 who made several important scientific discoveries using his telescope. He improved upon the original telescope and used it to observe that the Earth revolves around the sun, rather than the other way around, confirming Copernicus's hypothesis. Galileo also discovered that the moon has craters and that the planets in our solar system orbit the sun. He invented the pendulum and developed the pendulum clock to more accurately tell time. Galileo's discoveries fundamentally changed people's understanding of astronomy and the universe.

1. GALILEO GALILEI AND HIS
DISCOVERIES
By Posy, Kathy, and Arlene

2. GALILEO’S BIRTH AND
DEATH DATE
 Galileo was born on the
15th of February 1564 in
Pisa, Italy.
 Galileo died on the 8th of
January 1642 in Arcetri,
Italy.

3. GALILEO’S TELESCOPE
 Galileo made his first telescope in
1609. He didn’t really invent the
telescope. It was actually created by a
Dutch spectacle maker,(Hans
Lipperhey,) but when Galileo found out
he made his own. His magnified objects
twenty times, where as the first one
could only magnified objects three
times. Over time Galileo slowly
improved his telescope.

4. GALILEO AND THE SUN
 For years people thought the sun orbited around the Earth.
Nicoulas Copernicus made a scientific guess that the Earth
revolved around the Sun. A few years after Nicoulas’s death,
Galileo was born. In 1610 Galileo used his telescope to confirm
Nicoulas’s hypothesis. The Earth actually revolved around the
Sun instead of visa versa. He also discovered the moon has
creators. This to he discovered with his telescope.

5. THE SOLAR SYSTEM

6. THE PENDULUM
The pendulum was discovered by Galileo.
The way he discovered the pendulum, is
that one day Galileo was bored , he was
sitting in a church, and he saw the
candelabra swinging, that gave him the idea
of the pendulum. With the pendulum he
made the pendulum clock, to tell time
more accuartly. The pendulum also came
into play in many other inventions.

7. WHAT WOULD TODAY BE
LIKE WITH OUT GALILEO’S
DISCOVERIES
 If Galileo hadn’t made his discoveries we wouldn’t know the Earth
isn’t the center of the universe, we wouldn’t have a pendulum, or the
pendulum clock, and finally we would know little about the solar
system.

8. THANKS FOR WATCHING!

Posy, Kathy, and Arlene