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- When most people believed the world was flat, he used the sun to measure the size of the round Earth.
- 240 B.C.
- This discovery was a real game changer onto how scientists and everyone else viewed the Earth and other planets.
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- He set up a model of our solar system.
- Around 100 AD
- This was the first model of our solar system.
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- Came up with a different way to view the Universe. His heliocentric system put the Sun at the center.
- 1543
- This was important because this was how astronomers and scientists believed the Universe was like for many years
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- He was very wealthy so he contributed to more presice instruments before the invention of the telescope
- 1546-1601
- This was important because this was the first big step to creating the telescope.
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- He determined that the sun travels in ellipses, not circles.
- 1609
- The planets are closer and farther away from the sun at different points in the year.
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- He calculated the three laws describing the forces between objects what are now called Newton’s Laws.
- 1666
- These are important because they tie into almost everything we see in our life.
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- He came up with the theory of relativity and the equation E=MC^2.
- 1905
- This discovery was important because he helped other scientists that the laws of physics are the same for all non-accelerating observers.