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Copernicus developed a theory that Earth revolved around the Sun. This theory is called the Heliocentric Theory. He is often called the father of modern astronomy because he was the first to put the Sun in the middle instead of the Earth.

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He discovered that planets travel in wide ovals called ellipses. This was called planetary motion. He used math to explain and give a why for his theory of how planets orbit the Sun.

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He used his telescope to support Copernicus' theory that the Earth orbits the sun. He wrote a book about his findings, and because of his book, he got accused of heresy. He ended up spending the rest of his life on house arrest because he took a plea, saying his findings were false.

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He was an English doctor who published a study on the circulation of blood. He was the first to describe in detail systemic circulation and the process of blood being pumped to the brain. He became a physician later on.

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He proposed that there was a force (gravity)

that attracted all objects to another. One was called the Laws of Motion, which suggests that an object at rest stays at rest, and an object in motion stays in motion. The other Law is the Law of Math, which suggests that formulas are always true under certain conditions.

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He popularized the Scientific Method. He used this to prove a hypothesis with scientific experiments. He was also a writer who laid the groundwork for modern science