A long time ago, humans did not have as much knowledge about the world as we do now. We believed many crazy things, such as the Earth being flat, or that the Earth was in the center of our solar system. Of course, none of that is true, but we only know this due to the great minds such as Galileo, Kepler, and Newton.

Do you enjoy looking at the stars? Many people do, and thanks to Galileo, you can view them even more up close! Although he did not originally invent the telescope, he improved it drastically. Galileo also was a supporter of the idea that the earth was not in the middle of the solar system. However, due to the power of the Catholic Church at the time, he was unable to get the message out.

Johannes Kepler was an astronomer who invented the three laws of planetary motion. His laws supported the idea of a heliocentric universe (the sun being in the middle of our solar system). Thanks to Kepler, we understood the way our solar system worked even more!

Isaac Newton was credited for discovering gravity, but that's not the only thing he discovered. Newton also discovered the three laws of motion. These three laws would soon be the start of basic psychics.

Thanks to Galileo, Kepler, and Newton, we now have a great understanding of the heliocentric model, and of the way our solar system works.

Back then, we had very different ways of navigating our actual world. We would navigate using the stars in the sky at night. Now its as easy as pressing a button on your phone to view where you are in the world.