Galileo

Galileo was a man who lived a long, long time ago in Italy. He was very curious about the world around him and he loved to study the stars in the sky. He invented a special telescope that helped him see things in space that no one else could see before. One day, he discovered that the Earth was not the center of the universe, but that it actually went around the sun just like all the other planets. This was a really big deal because lots of people at the time thought the Earth was the most important thing in the whole universe.

Galileo also did some really cool experiments with things that fall to the ground. He discovered that heavy things fall just as fast as light things, which was another big surprise for people back then. Galileo loved to share his ideas with others, but some people didn't like his ideas because they went against what they believed. They didn't want to change the way they thought about the world.

Even though some people didn't like him, Galileo kept on learning and exploring. He was a very smart man who helped change the way people think about the world we live in.