Galileo was one of the first people to point a telescope at the night sky — and what he saw amazed everyone. Mountains on the Moon, moons around Jupiter, and proof that Earth is not the center of everything. He's often called the father of modern science.
Quick facts
- Born
- 15 February 1564, Pisa, Italy
- Died
- 8 January 1642, near Florence
- Famous for
- Studying space with a telescope
- Discovered
- Four big moons of Jupiter
🖼️ Photo coming soon
A questioning mind
Galileo loved to test ideas instead of just believing them. He rolled balls down ramps and dropped weights to learn how things move — doing real experiments, which was a brand-new way of thinking.
Looking at the sky
When Galileo heard about a new tool called the telescope, he built a better one and aimed it upward. He saw that the Moon had mountains and craters, and that Jupiter had its own little moons circling it!
A brave belief
Galileo agreed that Earth travels around the Sun. Many people back then didn't want to believe it, and he got in big trouble for saying so. But he was right, and time proved it.
"And yet it moves." — Galileo Galilei
Why we remember him
Galileo taught us to look closely and test our ideas. The path he started led straight to thinkers like Isaac Newton, who explained the very forces that move the stars and planets.