• Lesson 86: The Heliocentric Theory
  • Lesson 87: Copernicus
  • Lesson 88: Vesalius
  • Lesson 89: ✏️The Pencil ✏️

The Heliocentric Theory / Nicolaus Copernicus

Nicolaus Copernicus invented the The Heliocentric Theory, and challenged Aristotle’s theory that the Earth is at the center of the universe.

Now, into the theory that has been proved out of a theory and into reality. The Heliocentric Theory, meant that the sun was at the center of the universe, and all the planets, including Earth, go around the sun. Here are the planets known at the time in order:

  • Mercury
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn ???

Kepler’s laws of planetary motion + The Heliocentric Theory = truth about our solar system.

Vesalius

Vesalius made HUGE advancements in knowledge of the human body. Galen’s theory was wrong. He thought monkey’s body parts were the same as human body parts. They were actually not the same. Anyways, Vesalius taught and became famous, teaching a more accurate theory.

✏️The Pencil ✏️

The pencil started out in England, were a big graphite mine was found. The English gained a big advantage over their rivals, due to the fact they were the only ones that had pure graphite.

In a little while, other counties figured out how to make graphite rods for pencils. (See here: https://essaybank.home.blog/2020/09/14/history-lesson-15-2/)